Measurements Recognized by Entisoft Units

This document lists all of the SI, metric, American, English, historical, and ancient measurements currently recognized by Entisoft Units.  It includes the abbreviations, synonyms, formal names, and physical description of those measurements where appropriate.  This list also includes the prefixes and global text replacements which are recognized by Entisoft Units.  Each measurement is listed twice--once alphabetically by name, and once alphabetically under the category of physical measurement it represents.

" = " inch "
$ (US dollar) = $ (currency; base unit)
% (percent) = .01
' = " foot "
*approx = ""
*avg = ""
*exact = ""
/ = replacement for " per "
^2 = replacement for "squared"
^3 = replacement for "cubed"
A (ampere) = A (electric current; base unit)
a (atto) = 1E-18 (prefix)
a = are (area)
abA = abampere (electric current)
abamp = abampere (electric current)
abampere = 10 A (electric current)
abC = abcoulomb (electric charge)
abcoulomb = 10 C (electric charge)
abF = abfarad (capacitance)
abfarad = 1000000000 F (capacitance)
abH = abhenry (inductance)
abhenry = .000000001 H (inductance)
abmho = 1000000000 mho (conductance)
abohm = .000000001 ohm (electric resistance)
absolute temperature = thermodynamic temperature (thermodynamic temperature)
absolute viscosity = dynamic viscosity (dynamic viscosity)
ABSORBED DOSE
    gray = J/kg (derived unit)
    Gy = gray
    Rad = .01 Gy
absorbed dose = specific energy (specific energy)
abV = abvolt (electric potential)
abvolt = .00000001 V (electric potential)
ACCELERATION
    acceleration = m/s^2 (category unit)
    acceleration linear = acceleration
    freefall = g
    g (gravitational acceleration) = 9.80665 m/s^2
    galileo = .01 m/s^2
    gravitational acceleration = g
    linear acceleration = acceleration
acceleration = m/s^2 (acceleration; category unit)
acceleration angular = angular acceleration (angular acceleration)
acceleration linear = acceleration (acceleration)
acoustical energy = energy (energy)
acoustical intensity = heat flux density (heat flux density)
acoustical power = power (power)
acre = 4840 yard^2 (area)
ACTIVITY
    becquerel = 1/s (derived unit)
    Bq = becquerel
    Ci = curie
    curie = 37000000000 Bq
    rutherford = 1000000 Bq
activity = frequency (frequency)
actus (Roman actus) = 116.4 foot (length)
Ad = angstrom (length)
admiralty knot = 6080 ft/hour (velocity)
admittance = conductance (conductance)
ADSORPTION
    adsorption = mol/m^2 (category unit)
    surface concentration = adsorption
adsorption = mol/m^2 (adsorption; category unit)
agate (typography agate) = 7.14285714285714E-02 in (length)
amount of magnetization = magnetic flux (magnetic flux)
AMOUNT OF SUBSTANCE
    amount of substance = mol (category unit)
    mol (mole) = mol (base unit)
    mole = mol
amount of substance = mol (amount of substance; category unit)
amp = A (electric current)
ampere = A (electric current)
ampere turn = A*turn (magnetic force; derived unit)
amphora (Greek amphora) = 10.3 gallon (volume)
AMU (atomic mass unit) = 1.66044E-27 kg*approx (mass)
angstrom = .0000000001 m (length)
ANGULAR ACCELERATION
    acceleration angular = angular acceleration
    angular acceleration = rad/s^2 (category unit)
    rotational acceleration = angular acceleration
angular acceleration = rad/s^2 (angular acceleration; category unit)
angular impulse = angular momentum (angular momentum)
ANGULAR MOMENTUM
    angular impulse = angular momentum
    angular momentum = N*m*s (category unit)
    planck (Planck constant) = 6.626196E-34 J*s
angular momentum = N*m*s (angular momentum; category unit)
ANGULAR POWER
    angular power = W*rad (category unit)
angular power = W*rad (angular power; category unit)
angular speed = angular velocity (angular velocity)
ANGULAR VELOCITY
    angular speed = angular velocity
    angular velocity = rad/s (category unit)
    circular frequency = angular velocity
    rotational frequency = angular velocity
    rpm (revolutions per minute) = revolution/minute (derived unit)
    velocity angular = angular velocity
angular velocity = rad/s (angular velocity; category unit)
annual = yr (time)
ap = replacement for "apoth"
ap = replacement for "apothecary"
ap dr = dram ap (mass)
ap dram = dram ap (mass)
ap gr = grain ap (mass)
ap grain = grain ap (mass)
ap lb = pound ap (mass)
ap oz = oz ap (mass)
ap pound = pound ap (mass)
ap scruple = scruple (mass)
apostilb = cd/pi*m^2 (luminance; derived unit)
apoth = "ap"
apothecary = "ap"
approx = ""
arc deg = degree (plane angle)
arc degree = degree (plane angle)
arc min = arc minute (plane angle)
arc minute (minute of arc) = 1.66666666666667E-02 arc degree (plane angle)
arc s (second of arc) = 1.66666666666667E-02 arc minute (plane angle)
arc sec = arc s (plane angle)
arc second = arc s (plane angle)
archin (Russian archin) = 28 in (length)
are = 100 m^2 (area)
AREA
    a = are
    acre = 4840 yard^2
    are = 100 m^2
    area = m^2 (category unit)
    barn (abbreviation b) = 1E-28 m^2
    cho (Japanese cho) = 2.45 acre
    circular inch = .25 pi*in^2
    circular mil = .00000025 pi*in^2
    desyatina (Russian desyatina) = 2.7 acre
    hectare = 100 are
    homestead = .25 mile^2
    linear displacement = area
    permeability2 = area
    rood = 40 rod^2
    sabin = ft^2 (derived unit)
    section (of land) = mile^2 (derived unit)
    square = 100 ft^2
    surface area = area
    township = 36 mile^2
    volume to length = area
area = m^2 (area; category unit)
area to volume = wave number (wave number)
arpentcan = 27.52 mile (length)
arpentlin = 191.835 ft (length)
arroba (Mexican arroba) = 26.367 pound (mass)
arroba oil = oil arroba (volume)
arroba wine = wine arroba (volume)
as (Roman as) = 12 uncia (mass)
assay ton = 29.167 gram (mass)
astronomical unit = 149597871000 m*approx (length)
At = ampere turn (magnetic force)
AT = assay ton (mass)
at wt = atomic weight (force)
atm = atmosphere (pressure)
atmosphere = 101325 Pa (pressure)
atomic mass = AMU (mass)
atomic mass unit = AMU (mass)
atomic weight = AMU*g (force; derived unit)
atto = 1E-18 (prefix)
au = astronomical unit (length)
autumn = 89.6666666666667 day*approx (time)
avdp = ""
avg = ""
avogadro (Avogadro's number) = 6.022169E+23 1/mol*approx (unknown units)
avoirdupois = ""
b = byte (data)
Babylonian shekel = 8.37 gram (mass)
bag = 94 pound (mass)
bakers dozen = 13
balthazar = 8 magnum (volume)
bar = 100000 Pa (pressure)
barie = .1 Pa (pressure)
barleycorn = .333333333333333 in (length)
barn (abbreviation b) = 1E-28 m^2 (area)
barrel = 31.5 gallon (volume)
barye = .1 Pa (pressure)
basis point = .01 percent
bath (Israeli bath) = 2.25 in^3 (volume)
baud = .1 byte/s (data flow rate)
bbl = petroleum barrel (volume)
bearing capacity mass basis = surface density (surface density)
becquerel = 1/s (activity; derived unit)
beer gallon (English beer gallon) = 282 in^3 (volume)
bending moment = energy (energy)
bending moment to length = force (force)
bes (Roman bes) = .48 pound (mass)
bev (billion electric volts) = 1000000000 electron volt (energy)
bi = 2 (prefix)
Biblical cubit = 18 in (length)
billion = 1000000000 (prefix)
biot = 10 A (electric current)
bit = bit (data; base unit)
blondel = cd/pi*m^2 (luminance; derived unit)
board foot = 144 in^3 (volume)
bolt (of cloth) = 40 yard (length)
boltzmann (Boltzmann constant) = 1.380622E-23 J/K (heat capacity)
bottom measure = .025 in (length)
bowling ball = 16 pound (mass)
bps (bits per second) = .1 byte/s (data flow rate)
Bq = becquerel (activity)
British = "UK"
BTU (International Table BTU) = 1055.05585262 J*approx (energy)
bu = bushel (volume)
buck = $ (currency)
bundle (of paper) = 2 ream
bushel (dry bushel) = 4 peck (volume)
byte = 8 bit (data)
c (centi) = .01 (prefix)
C = coulomb (electric charge)
c = speed of light (velocity)
cable = cable length (length)
cable length = 720 ft (length)
cal = calorie (energy)
calendar yr (calendar year) = 365 day (time)
caliber (gun barrel caliber) = .01 in (length)
caloric value mole basis = molar energy (molar energy)
calorie (International Table calorie) = 4.1868 J (energy)
calorific value mass basis = specific energy (specific energy)
calorific value volume basis = pressure (pressure)
Canadian gallon = .00454609 m^3 (volume)
candela = cd (luminous intensity)
candle power (spherical) = 12.556 lumen (luminous flux)
CAPACITANCE
    abF = abfarad
    abfarad = 1000000000 F
    capacitance = F (category unit)
    electric capacitance = capacitance
    F = farad
    farad = s/ohm (derived unit)
    sF = statfarad
    statfarad = 1.11265E-12 F
capacitance = F (capacitance; category unit)
capacity = volume (volume)
capture unit = wave number (wave number)
carat = carat troy (mass)
carat t = carat troy (mass)
carat troy (troy carat) = .0002 kg (mass)
case (of paper) = 4 bundle
catty (Chinese catty) = 1.33333333333333 pound (mass)
cc (cubic centimeters) = cm^3 (volume; derived unit)
cd (candela) = cd (luminous intensity; base unit)
celsius = dC (thermodynamic temperature)
cen = century (time)
cental (British cental) = 100 pound (mass)
centennial = century (time)
centesimal minute = .01 grade (plane angle)
centesimal second = .0001 grade (plane angle)
centi = .01 (prefix)
centigrade = dC (thermodynamic temperature)
centimilli = .00001 (prefix)
century = 100 yr (time)
Cesium frequency = Sc frequency (frequency)
cfs (cubic feet per second) = ft^3/s (volume flow rate; derived unit)
ch = chain (length)
chain (surveyors chain) = 4 rod (length)
char = byte (data)
character = byte (data)
charge = electric charge (electric charge)
charge density = electric charge density (electric charge density)
chemical potential = molar energy (molar energy)
chetvert (Russian chetvert) = 5.96 bushel (volume)
chin = catty (mass)
cho (Japanese cho) = 2.45 acre (area)
Ci = curie (activity)
circle = 2 pi*rad (plane angle)
circular frequency = angular velocity (angular velocity)
circular inch = .25 pi*in^2 (area)
circular mil = .00000025 pi*in^2 (area)
city block (informal) = 100 yard*approx (length)
cloth finger = 4.5 in (length)
cloth quarter = 9 in (length)
cm (centimilli) = .00001 (prefix)
COMPRESSIBILITY
    compressibility = 1/Pascal (category unit)
    specific fuel consumption volume basic = compressibility
    stretchability = compressibility
    twistability = compressibility
    volume basis specific fuel consumption = compressibility
compressibility = 1/Pascal (compressibility; category unit)
concentration (of amount of substance) = mol/m^3 (concentration; category unit)
CONCENTRATION
    concentration (of amount of substance) = mol/m^3 (category unit)
    concentration mole to volume = concentration
    ionic strength = concentration
    mole to volume concentration = concentration
    solubility = concentration
concentration mass to mass = dimensionless unit
concentration mass to volume = mass density (mass density)
concentration mole to volume = concentration (concentration)
CONCENTRATION RATE
    concentration rate = mol/m^3*s (category unit)
    reaction rate = concentration rate
concentration rate = mol/m^3*s (concentration rate; category unit)
concentration volume to mole = molar volume (molar volume)
concentration volume to volume = dimensionless unit
CONDUCTANCE
    abmho = 1000000000 mho
    admittance = conductance
    conductance = S (category unit)
    mho = siemens
    modulus of admittance = conductance
    S = siemens
    siemens = A/V (derived unit)
    susceptance = conductance
conductance = S (conductance; category unit)
CONDUCTIVITY
    conductivity = S/m (category unit)
    specific conductance = conductivity
    volume conductivity = conductivity
conductivity = S/m (conductivity; category unit)
conversion change rate = mole flow rate (mole flow rate)
cooling duty = dimensionless unit
coomb = 4 bushel (volume)
cord (of wood) = 128 ft^3 (volume)
cord foot (of wood) = 16 ft^3 (volume)
corrosion rate = velocity (velocity)
cotton bale (US) = 500 pound (mass)
cotton bale Egypt = 750 pound (mass)
coul = coulomb (electric charge)
coulomb = A*s (electric charge; derived unit)
cps (characters per second) = byte/s (data flow rate; derived unit)
crith = .0906 gram (mass)
ct = carat troy (mass)
cu = cup (volume)
cubed = "^3"
cubit = Biblical cubit (length)
cup = .5 pint (volume)
curie = 37000000000 Bq (activity)
CURRENCY
    $ (US dollar) = $ (base unit)
    buck = $
    currency = $ (category unit)
    dollar = $
    tick = .03125 $
    US dollar = $
currency = $ (currency; category unit)
current = electric current (electric current)
CURRENT DENSITY
    current density = A/m^2 (category unit)
    electric current density = current density
current density = A/m^2 (current density; category unit)
curvature of a curve = wave number (wave number)
cwt = short hundredweight (mass)
d (deci) = .1 (prefix)
D (deka) = 10 (prefix)
d = day (time)
da (deka) = 10 (prefix)
dalton = AMU (mass)
damping viscosity = mass flow rate (mass flow rate)
DATA
    b = byte
    bit = bit (base unit)
    byte = 8 bit
    char = byte
    character = byte
    data = byte (category unit)
    gb = gigabyte
    gigabyte = 1024 megabyte
    kb = kilobyte
    kilobyte = 1024 byte
    mb = megabyte
    megabyte = 1024 kilobyte
    nibble = .5 byte
    tb = terabyte
    terabyte = 1024 gigabyte
data = byte (data; category unit)
DATA FLOW RATE
    baud = .1 byte/s
    bps (bits per second) = .1 byte/s
    cps (characters per second) = byte/s (derived unit)
    data flow rate = byte/s (category unit)
data flow rate = byte/s (data flow rate; category unit)
day = 24 hour (time)
dC (Celsius degree) = K (thermodynamic temperature)
deadweight ton = long ton (mass)
dec = 10 (prefix)
decade = 10 yr (time)
deci = .1 (prefix)
decillion = 1E+33 (prefix)
decimilli = .0001 (prefix)
deg = degree (plane angle)
degree (Pi rad / 180) = 1.74532925199433E-02 rad (plane angle)
deka = 10 (prefix)
demi = .5 (prefix)
denarius (Roman denarius) = 60 grain (mass)
density = mass density (mass density)
DENSITY OF STATES
    density of states = 1/J*m^3 (category unit)
density of states = 1/J*m^3 (density of states; category unit)
DENSITY OF VIBRATIONAL MODES
    density of vibrational modes = s/m^3 (category unit)
density of vibrational modes = s/m^3 (density of vibrational modes; category unit)
depth = length (length)
desyatina (Russian desyatina) = 2.7 acre (area)
dF (Fahrenheit degree) = .555555555555556 K (thermodynamic temperature)
dialectric permittivity = permittivity (permittivity)
dialectric polarization = electric flux density (electric flux density)
dialectric strength = permittivity (permittivity)
diffusivity = kinematic viscosity (kinematic viscosity)
digitus (Roman digitus) = .73 in (length)
DIMENSIONLESS UNIT
    % (percent) = .01
    bakers dozen = 13
    basis point = .01 percent
    bundle (of paper) = 2 ream
    case (of paper) = 4 bundle
    concentration mass to mass = dimensionless unit
    concentration volume to volume = dimensionless unit
    cooling duty = dimensionless unit
    dimensionless unit = 1  (category unit)
    dozen = 12
    dry = 1.16364718614719 approx
    googol = 1E+100
    great gross = 12 gross
    gross = 12 dozen
    karat = 4.16666666666667E-02
    length to length = dimensionless unit
    mass to mass concentration = dimensionless unit
    percent = .01
    pi = 3.14159265358979
    proof = .005
    quire (of paper) = 25
    ream (of paper) = 20 quire
    score = 20
    scotch = 86 proof
    UK (British) = 1.000002
    UK caliber (British caliber) = .001
    volume to volume concentration = dimensionless unit
dimensionless unit = 1  (category unit)
dinar (Arabian dinar) = 4.2 gram (mass)
diopter (lens power) = 1/m (wave number; derived unit)
displacement = electric flux density (electric flux density)
displacement ton = 35 ft^3 (volume)
diurnal = day (time)
dK = K (thermodynamic temperature)
dm (decimilli) = .0001 (prefix)
dollar = $ (currency)
doppelzentner = 100 kg (mass)
DOSE EQUIV
    rem = .01 Sv
    sievert = m^2/s^2 (derived unit)
    Sv = sievert
dose equiv = specific energy (specific energy)
double = 2 (prefix)
dozen = 12
dR (Rankine degree) = .555555555555556 K (thermodynamic temperature)
dr = dram (mass)
dr ap = dram ap (mass)
dr fl = dram fluid (volume)
dr fluid = dram fluid (volume)
dr t = dram troy (mass)
drachma2 (Greek drachma) = 4.2923 gram (mass)
draft = pressure (pressure)
dram (avoirdupois dram) = .0625 oz (mass)
dram ap (apothecary dram) = 3 scruple (mass)
dram fl = dram fluid (volume)
dram fluid (fluid dram) = .125 oz fluid (volume)
dram troy (troy dram) = 60 grain (mass)
dRe (Reaumur degree) = 1.25 K (thermodynamic temperature)
drop = .03 cm^3 (volume)
dry = 1.16364718614719 approx
dry barrel = 7056 in^3 (volume)
dry gallon = 268.8025 in^3*approx (volume)
dry pint = .5 dry quart (volume)
dry quart = .25 dry gallon (volume)
duodec = 12 (prefix)
dw t = pennyweight troy (mass)
dyn = dyne (force)
DYNAMIC VISCOSITY
    absolute viscosity = dynamic viscosity
    dynamic viscosity = Pa*s (category unit)
    flow rate to length mass basis = dynamic viscosity
    mass basis flow rate to length = dynamic viscosity
    P = poise
    poise = gram/cm*s (derived unit)
    reyn = lbf*s/in^2 (derived unit)
    viscosity absolute = dynamic viscosity
    viscosity dynamic = dynamic viscosity
dynamic viscosity = Pa*s (dynamic viscosity; category unit)
dyne (cm*gm/s^2) = .00001 N (force)
E (exa) = 1E+18 (prefix)
e = elementary charge (electric charge)
earth mass = 5.983E+24 kg*approx (mass)
earth to moon (mean distance earth to moon) = 238860 mile (length)
EEC therm (European Economic Community therm) = 105506000 J (energy)
eighth = .125 (prefix)
ELASTANCE
    elastance = 1/F (category unit)
elastance = 1/F (elastance; category unit)
elasticity = surface tension (surface tension)
electric capacitance = capacitance (capacitance)
ELECTRIC CHARGE
    abC = abcoulomb
    abcoulomb = 10 C
    C = coulomb
    charge = electric charge
    coul = coulomb
    coulomb = A*s (derived unit)
    e = elementary charge
    electric charge = C (category unit)
    electric flux = electric charge
    electric induction flux = electric charge
    electronic charge = elementary charge
    elementary charge = 1.6021917E-19 C
    flux of displacement = electric charge
    franklin current = statcoulomb
    quantity of electricity = electric charge
    sC = statcoulomb
    statcoulomb = .000000000333564 C
electric charge = C (electric charge; category unit)
ELECTRIC CHARGE DENSITY
    charge density = electric charge density
    electric charge density = C/m^3 (category unit)
    volume density of charge = electric charge density
electric charge density = C/m^3 (electric charge density; category unit)
ELECTRIC CURRENT
    A (ampere) = A (base unit)
    abA = abampere
    abamp = abampere
    abampere = 10 A
    amp = A
    ampere = A
    biot = 10 A
    current = electric current
    electric current = A (category unit)
    intl ampere ampere (international as of 1948) = .999835 A
    magnetic potential difference = electric current
    sA = statampere
    statampere = .000000000333564 A
electric current = A (electric current; category unit)
electric current density = current density (current density)
ELECTRIC DIPOLE MOMENT
    electric dipole moment = C*m (category unit)
electric dipole moment = C*m (electric dipole moment; category unit)
electric displacement = electric flux density (electric flux density)
electric field (constant) = 8.8542E-12 F/m (permittivity)
ELECTRIC FIELD STRENGTH
    electric field strength = V/m (category unit)
    electric intensity = electric field strength
electric field strength = V/m (electric field strength; category unit)
electric flux = electric charge (electric charge)
ELECTRIC FLUX DENSITY
    dialectric polarization = electric flux density
    displacement = electric flux density
    electric displacement = electric flux density
    electric flux density = C/m^2 (category unit)
    electric polarization = electric flux density
    surface density of charge = electric flux density
electric flux density = C/m^2 (electric flux density; category unit)
electric inductance = inductance (inductance)
electric induction flux = electric charge (electric charge)
electric intensity = electric field strength (electric field strength)
ELECTRIC MOBILITY
    electric mobility = m^2/V*s (category unit)
    mobility = electric mobility
electric mobility = m^2/V*s (electric mobility; category unit)
electric polarization = electric flux density (electric flux density)
ELECTRIC POTENTIAL
    abV = abvolt
    abvolt = .00000001 V
    electric potential = V (category unit)
    electromotive force = electric potential
    induced emf = electric potential
    potential = electric potential
    potential difference = electric potential
    statvolt = 299.7925 V
    sV = statvolt
    V = volt
    volt = W/A (derived unit)
    voltage = electric potential
    voltage potential = electric potential
electric potential = V (electric potential; category unit)
ELECTRIC RESISTANCE
    abohm = .000000001 ohm
    electric resistance = ohm (category unit)
    impedance = electric resistance
    modulus of impedance = electric resistance
    ohm = V/A (derived unit)
    omega = ohm
    reactance = electric resistance
    resistance = electric resistance
    statohm = 898755400000 ohm
electric resistance = ohm (electric resistance; category unit)
electrical power = power (power)
electrochemical potential = molar energy (molar energy)
ELECTROMAGNETIC MOMENT
    electromagnetic moment = A*m^2 (category unit)
    magnetic moment = electromagnetic moment
electromagnetic moment = A*m^2 (electromagnetic moment; category unit)
electromotive force = electric potential (electric potential)
electron mass (electron rest mass) = 9.109558E-31 kg (mass)
electron volt = 1.6021917E-19 J*approx (energy)
electronic charge = elementary charge (electric charge)
elementary charge = 1.6021917E-19 C (electric charge)
ell = 45 in (length)
em (typography em) = point (length)
emitted radiant flux = heat flux density (heat flux density)
en (typography en) = .5 em (length)
ENERGY
    acoustical energy = energy
    bending moment = energy
    bev (billion electric volts) = 1000000000 electron volt
    BTU (International Table BTU) = 1055.05585262 J*approx
    cal = calorie
    calorie (International Table calorie) = 4.1868 J
    EEC therm (European Economic Community therm) = 105506000 J
    electron volt = 1.6021917E-19 J*approx
    energy = J (category unit)
    erg = .0000001 J
    eV = electron volt
    frigorie = 1000 calorie
    heat = energy
    impact energy = energy
    J = joule
    joule = N*m (derived unit)
    moment of force = energy
    quantity of heat = energy
    radiant energy = energy
    rydberg = 1.36054 electron volt
    surface energy = energy
    therm = 100000 BTU
    thermie = 1000000 calorie
    thermochemical calorie = 4.184 J
    torque = energy
    UK thermal unit = BTU
    Wh (watt hour) = W*hour (derived unit)
    work = energy
    WWII = 3.5 megaton*TNT
energy = J (energy; category unit)
energy density = pressure (pressure)
engineers chain = 100 ft (length)
engineers link = ft (length)
English carat = .000205 kg (mass)
ennial = yr (time)
enthalpy mass basis = specific energy (specific energy)
enthalpy mole basis = molar energy (molar energy)
entropy = heat capacity (heat capacity)
ephah (Israeli ephah) = 10 omer (volume)
epsilon0 = electric field (permittivity)
equiv = replacement for "equivalent"
equiv footcandle (equivalent footcandle) = lm/pi*ft^2 (illuminance; derived unit)
equiv lux (equivalent lux) = lx/pi (illuminance; derived unit)
equiv phot (equivalent phot) = cd/pi*cm^2 (luminance; derived unit)
equivalent = "equiv"
erg = .0000001 J (energy)
eV = electron volt (energy)
exa = 1E+18 (prefix)
exact = ""
f (femto) = .000000000000001 (prefix)
F = farad (capacitance)
fahrenheit = dF (thermodynamic temperature)
farad = s/ohm (capacitance; derived unit)
faraday (Faraday constant) = 96486.7 C/mol (unknown units)
fath = fathom (length)
fathom = 6 ft (length)
fbm = board foot (volume)
fc = footcandle (illuminance)
Fdy = faraday (unknown units)
feet = "foot"
femto = .000000000000001 (prefix)
fermi = .000000000000001 m (length)
fifth = .8 quart (volume)
finger = .875 in (length)
firkin = 9 gallon (volume)
fiscal yr (fiscal year) = 360 day (time)
fl = replacement for "liq"
fl = replacement for "liquid"
fl dr = dram fluid (volume)
fl dram = dram fluid (volume)
fl head = length (length)
fl oz = oz fluid (volume)
flam = footlambert (luminance)
flow rate area mass basis (flow rate/area mass basis) = kg*s/m^2 (flow rate area mass basis; category unit)
FLOW RATE AREA MASS BASIS
    flow rate area mass basis (flow rate/area mass basis) = kg*s/m^2 (category unit)
    mass basis flow rate to area = flow rate area mass basis
flow rate mass basis = mass flow rate (mass flow rate)
flow rate mole basis = mole flow rate (mole flow rate)
flow rate to area volume basis = velocity (velocity)
flow rate to length mass basis = dynamic viscosity (dynamic viscosity)
flow rate to length volume basis = kinematic viscosity (kinematic viscosity)
flow rate volume basis = volume flow rate (volume flow rate)
fluid dr = dram fluid (volume)
fluid dram = dram fluid (volume)
fluid oz = oz fluid (volume)
FLUIDITY
    fluidity = m*s/kg (category unit)
    rhe = 10 m^2/N*s
fluidity = m*s/kg (fluidity; category unit)
flux linkage = magnetic flux (magnetic flux)
flux of displacement = electric charge (electric charge)
foot (" foot ") = replacement for "'"
foot = 12 in (length)
foot = replacement for "feet"
football field = 100 yard (length)
footcandle = lm/ft^2 (illuminance; derived unit)
footlambert = cd/pi*ft^2 (luminance; derived unit)
FORCE
    at wt = atomic weight
    atomic weight = AMU*g (derived unit)
    bending moment to length = force
    dyn = dyne
    dyne (cm*gm/s^2) = .00001 N
    force = N (category unit)
    gf = gram force
    gram force = gram*g (derived unit)
    kip (kilopound force) = 1000 pound*g
    lb force = pound force
    lbf = pound force
    N = newton
    newton = kg*m/s^2 (derived unit)
    Nt = newton
    pdl = poundal
    pound force = pound*g (derived unit)
    poundal = ft*pound/s^2 (derived unit)
    sthene = 1000 N
    ton force = metric ton*g (derived unit)
    weight = force
force = N (force; category unit)
fortnight = 2 week (time)
fps (feet per second) = ft/s (velocity; derived unit)
franklin current = statcoulomb (electric charge)
freefall = g (acceleration)
freight ton = 40 ft^3 (volume)
FREQUENCY
    activity = frequency
    Cesium frequency = Sc frequency
    frequency = 1/s (category unit)
    hertz = 1/s (derived unit)
    Hz = hertz
    pitch = frequency
    radioactivity = frequency
    Sc frequency (cesium atom frequency) = 9192631770 1/s
frequency = 1/s (frequency; category unit)
frigorie = 1000 calorie (energy)
ft = foot (length)
fuel consumption = length (length)
FUEL EFFICIENCY
    fuel efficiency = 1/m^2 (category unit)
    length to volume = fuel efficiency
    mpg (miles per gallon) = mile/gallon (derived unit)
fuel efficiency = 1/m^2 (fuel efficiency; category unit)
funt (Russian funt) = .9 pound (mass)
fur = furlong (length)
furlong (surveyors furlong) = 10 chain (length)
fy = fiscal yr (time)
G (giga) = 1000000000 (prefix)
g (gravitational acceleration) = 9.80665 m/s^2 (acceleration)
G = gauss (magnetic flux density)
gal = gallon (volume)
galileo = .01 m/s^2 (acceleration)
gallon = 231 in^3 (volume)
gamma = .000000001 T (magnetic flux density)
gas = universal gas (molar heat capacity)
gauss = .0001 T (magnetic flux density)
gb = gigabyte (data)
geodetic foot = survey foot (length)
geographical mile = nautical mile (length)
gf = gram force (force)
giga = 1000000000 (prefix)
gigabyte = 1024 megabyte (data)
gilbert = .795775 ampere turn (magnetic force)
gill = .5 cup (volume)
gm = gram (mass)
googol = 1E+100
googol = 1E+100 (prefix)
gpm (gallons per minute) = gal/min (volume flow rate; derived unit)
gr = grain (mass)
gr ap = grain ap (mass)
gr t = grain troy (mass)
grad = grade (plane angle)
grade = .015707963267949 rad (plane angle)
gradus (Roman gradus) = 2.43 foot (length)
grain (avoirdupois grain) = 1.42857142857143E-04 pound (mass)
grain ap (apothecary grain) = grain (mass)
grain troy (troy grain) = grain (mass)
gram = .001 kg (mass)
gram force = gram*g (force; derived unit)
gravitation (constant) = .00000000006664 N*m^2/kg^2 (unknown units)
gravitational acceleration = g (acceleration)
gray = J/kg (absorbed dose; derived unit)
great gross = 12 gross
Greek cubit = 18.22 in (length)
Greek fathom = 4 Greek cubit (length)
Greek obolos = 715.38 milligram (mass)
Greek palm = .333333333333333 Greek span (length)
Greek span = .5 Greek cubit (length)
gross = 12 dozen
gross cwt = long hundredweight (mass)
gross hundredweight = long hundredweight (mass)
gross ton = long ton (mass)
gunters chain = chain (length)
gunters link = link (length)
Gy = gray (absorbed dose)
h (hecto) = 100 (prefix)
H = henry (inductance)
h = hour (time)
H20 density (water weight density) = .0885472440945 kg/m^2*s^2 (weight density)
half = .5 (prefix)
hand = 4 in (length)
hd = hogshead (volume)
heat = energy (energy)
HEAT CAPACITY
    boltzmann (Boltzmann constant) = 1.380622E-23 J/K
    entropy = heat capacity
    heat capacity = J/K (category unit)
    k = boltzmann
heat capacity = J/K (heat capacity; category unit)
heat conductivity = thermal conductivity (thermal conductivity)
heat flow rate = power (power)
heat flux = heat flux density (heat flux density)
HEAT FLUX DENSITY
    acoustical intensity = heat flux density
    emitted radiant flux = heat flux density
    heat flux = heat flux density
    heat flux density = W/m^2 (category unit)
    irradiance = heat flux density
    power to area = heat flux density
    radiant exitance = heat flux density
    radiant flux received = heat flux density
    sound intensity = heat flux density
    thermal flux = heat flux density
heat flux density = W/m^2 (heat flux density; category unit)
HEAT RELEASE RATE
    heat release rate = W/m^3 (category unit)
    mixing power = heat release rate
heat release rate = W/m^3 (heat release rate; category unit)
HEAT TRANSFER COEFFICIENT
    heat transfer coefficient = W/m^2*K (category unit)
heat transfer coefficient = W/m^2*K (heat transfer coefficient; category unit)
hectare = 100 are (area)
hecto = 100 (prefix)
hectokilo = 100000 (prefix)
hefner candle = .92 cd (luminous intensity)
height = length (length)
hekat (Israeli hekat) = 291 in^3 (volume)
henry = Wb/A (inductance; derived unit)
hertz = 1/s (frequency; derived unit)
Hg weight density = 133322.368421 kg/m^2*s^2 (weight density)
hhd = hogshead (volume)
hk (hectokilo) = 100000 (prefix)
HK = hefner candle (luminous intensity)
hogshead = 2 barrel (volume)
homestead = .25 mile^2 (area)
horsepower = 550 ft*pound*g/sec (power)
hour = 60 minute (time)
hp = horsepower (power)
hr = hour (time)
hundred = 100 (prefix)
hundredweight = short hundredweight (mass)
hyl = gf*s^2/m (mass; derived unit)
Hz = hertz (frequency)
ies ("ies ") = "y "
ILLUMINANCE
    equiv footcandle (equivalent footcandle) = lm/pi*ft^2 (derived unit)
    equiv lux (equivalent lux) = lx/pi (derived unit)
    fc = footcandle
    footcandle = lm/ft^2 (derived unit)
    illuminance = lx (category unit)
    illumination = illuminance
    luminous exitance = illuminance
    lux = lm/m^2 (derived unit)
    lx = lux
    nox = .001 lux
illuminance = lx (illuminance; category unit)
illumination = illuminance (illuminance)
imp ("imp ") = "UK "
impact energy = energy (energy)
impedance = electric resistance (electric resistance)
imperial = "UK"
impulse = momentum (momentum)
in = inch (length)
inch (" inch ") = replacement for """
inch = .0254 m (length)
inch = replacement for "inches"
inches = "inch"
induced emf = electric potential (electric potential)
INDUCTANCE
    abH = abhenry
    abhenry = .000000001 H
    electric inductance = inductance
    H = henry
    henry = Wb/A (derived unit)
    inductance = H (category unit)
    mutual inductance = inductance
    permeance = inductance
    self inductance = inductance
    sH = stathenry
    stathenry = 898755400000 H
inductance = H (inductance; category unit)
intensity of force = surface tension (surface tension)
interfacial tension = surface tension (surface tension)
international = "intl"
intl = replacement for "international"
intl ampere ampere (international as of 1948) = .999835 A (electric current)
intl foot = foot (length)
intl mile = mile (length)
intl yard = yard (length)
IONIC CONDUCTIVITY
    ionic conductivity = S*m^2/mol (category unit)
ionic conductivity = S*m^2/mol (ionic conductivity; category unit)
ionic strength = concentration (concentration)
ips (inches per second) = in/s (velocity; derived unit)
irradiance = heat flux density (heat flux density)
Israeli cubit = 21.8 inch (length)
Israeli shekel mass = 14.1 gram (mass)
J = joule (energy)
jeroboam = .8 gallon (volume)
jigger = 1.5 oz fluid (volume)
joule = N*m (energy; derived unit)
K (Kelvin degree) = K (thermodynamic temperature; base unit)
k (kilo) = 1000 (prefix)
k = boltzmann (heat capacity)
karat = 4.16666666666667E-02
kayser = 100 1/m (wave number)
kb = kilobyte (data)
kelvin = K (thermodynamic temperature)
ken (Japanese ken) = 6.95 foot (length)
key = kg (mass)
kg (kilogram) = kg (mass; base unit)
kilderkin = 18 gallon (volume)
kilo = 1000 (prefix)
kilobyte = 1024 byte (data)
kin (Japanese kin) = 1.323 pound (mass)
KINEMATIC VISCOSITY
    diffusivity = kinematic viscosity
    flow rate to length volume basis = kinematic viscosity
    kinematic viscosity = m^2/s (category unit)
    St = stoke
    stoke = .0001 m^2/s
    thermal diffusion = kinematic viscosity
    transmissivity = kinematic viscosity
    viscosity kinematic = kinematic viscosity
    volume basis flow rate to length = kinematic viscosity
kinematic viscosity = m^2/s (kinematic viscosity; category unit)
kip (kilopound force) = 1000 pound*g (force)
knot (nautical miles per hour) = nmi/hour (velocity; derived unit)
koku (Japanese koku) = 47.6 gallon (volume)
kph (kilometers per hour) = km/hour (velocity; derived unit)
kwan (Japanese kwan) = 8.27 pound (mass)
L = avogadro (unknown units)
l = liter (volume)
lam = lambert (luminance)
lambert = cd/pi*cm^2 (luminance; derived unit)
land league = league (length)
land mile = mile (length)
langley = calorie/cm^2 (surface tension; derived unit)
last = 80 bushel (volume)
lb = pound (mass)
lb ap = pound ap (mass)
lb force = pound force (force)
lb t = pound troy (mass)
lb troy = pound troy (mass)
lbf = pound force (force)
league = 3 mile (length)
leap yr (leap year) = 366 day (time)
LENGTH
    actus (Roman actus) = 116.4 foot
    Ad = angstrom
    agate (typography agate) = 7.14285714285714E-02 in
    angstrom = .0000000001 m
    archin (Russian archin) = 28 in
    arpentcan = 27.52 mile
    arpentlin = 191.835 ft
    astronomical unit = 149597871000 m*approx
    au = astronomical unit
    barleycorn = .333333333333333 in
    Biblical cubit = 18 in
    bolt (of cloth) = 40 yard
    bottom measure = .025 in
    cable = cable length
    cable length = 720 ft
    caliber (gun barrel caliber) = .01 in
    ch = chain
    chain (surveyors chain) = 4 rod
    city block (informal) = 100 yard*approx
    cloth finger = 4.5 in
    cloth quarter = 9 in
    cubit = Biblical cubit
    depth = length
    digitus (Roman digitus) = .73 in
    earth to moon (mean distance earth to moon) = 238860 mile
    ell = 45 in
    em (typography em) = point
    en (typography en) = .5 em
    engineers chain = 100 ft
    engineers link = ft
    fath = fathom
    fathom = 6 ft
    fermi = .000000000000001 m
    finger = .875 in
    fl head = length
    foot = 12 in
    football field = 100 yard
    ft = foot
    fuel consumption = length
    fur = furlong
    furlong (surveyors furlong) = 10 chain
    geodetic foot = survey foot
    geographical mile = nautical mile
    gradus (Roman gradus) = 2.43 foot
    Greek cubit = 18.22 in
    Greek fathom = 4 Greek cubit
    Greek palm = .333333333333333 Greek span
    Greek span = .5 Greek cubit
    gunters chain = chain
    gunters link = link
    hand = 4 in
    height = length
    in = inch
    inch = .0254 m
    intl foot = foot
    intl mile = mile
    intl yard = yard
    Israeli cubit = 21.8 inch
    ken (Japanese ken) = 6.95 foot
    land league = league
    land mile = mile
    league = 3 mile
    length = m (category unit)
    li (Chinese li) = 705 yard
    light yr (light year) = speed of light*yr (derived unit)
    line = 8.33333333333333E-02 in
    link (surveyors link) = 7.92 in
    lyr = light yr
    m (meter) = m (base unit)
    marathon = 46145 yard
    marine league = nautical league
    meter = m
    metre = m
    mi = mile
    micron = .000001 m
    mil = .001 in
    mile = 5280 foot
    nail (cloth nail) = .0625 yard
    naut mi = nautical mile
    nautical league = 3 nautical mile
    nautical mile = 1852 m
    naval shot = 15 fathom
    nmi = nautical mile
    nmile = nautical mile
    pace = 30 in
    palm = 3 in
    parasang = 3.5 mile
    parsec = au*rad/arc sec (derived unit)
    pc = parsec
    perch = rod
    pica (typography pica) = .166666666666667 in
    point (typography point) = .013837 in
    pole = rod
    rd = rod
    ri (Japanese ri) = 2.44 mile
    rod (surveyors rod) = 25 link
    Roman cubit = 17.5 in
    Roman foot = .971 foot
    Roman mile = 5000 Roman foot
    rope = 20 ft
    sazhen (Russian sazhen) = 6.9 foot
    shaku (Japanese shaku) = 11.93 in
    skein = 120 yd
    soccer field = 100 yard
    span (cloth span) = 9 in
    spindle = 14400 yard
    stadia (Greek stadia) = 400 Greek cubit
    stadium (Roman stadium) = 202 yard
    statute league = league
    statute mile = mile
    sun (Japanese sun) = 1.193 in
    survey foot = .304800609601219 m
    surveyors chain = chain
    surveyors furlong = furlong
    surveyors link = link
    surveyors rod = rod
    U = micron
    UK mile (British mile) = 1609.34721869 m
    vara (Mexican vara) = 32.99 in
    verst (Russian verst) = 3500 foot
    wavelength = length
    width = length
    yard = 3 ft
    yd = yard
length = m (length; category unit)
length to length = dimensionless unit
length to volume = fuel efficiency (fuel efficiency)
lens power = wave number (wave number)
li (Chinese li) = 705 yard (length)
liang = tael (mass)
libra (Roman libra) = as (mass)
librae = libra (mass)
LIGHT EXPOSURE
    light exposure = lx*s (category unit)
light exposure = lx*s (light exposure; category unit)
light yr (light year) = speed of light*yr (length; derived unit)
line = 8.33333333333333E-02 in (length)
linear acceleration = acceleration (acceleration)
linear current density = magnetic field strength (magnetic field strength)
linear displacement = area (area)
linear electric current density = magnetic field strength (magnetic field strength)
linear impulse = momentum (momentum)
linear momentum = momentum (momentum)
linear power = power (power)
linear speed = velocity (velocity)
linear velocity = velocity (velocity)
link (surveyors link) = 7.92 in (length)
liq = "fl"
liquid = "fl"
liter = .001 m^3 (volume)
livre (French livre) = 490 gram (mass)
lm = lumen (luminous flux)
load = 1.9 yd^3 (volume)
long hundredweight (avoirdupois long hundredweight) = 112 pound (mass)
long quarter = 28 pound (mass)
long ton (avoirdupois long ton) = 2240 pound (mass)
loschmidt (Loschmidt's constant) = 2.68719E+25 1/m^3 (number concentration)
lumen = cd*sr (luminous flux; derived unit)
LUMINANCE
    apostilb = cd/pi*m^2 (derived unit)
    blondel = cd/pi*m^2 (derived unit)
    equiv phot (equivalent phot) = cd/pi*cm^2 (derived unit)
    flam = footlambert
    footlambert = cd/pi*ft^2 (derived unit)
    lam = lambert
    lambert = cd/pi*cm^2 (derived unit)
    luminance = cd/m^2 (category unit)
    nit = cd/m^2 (derived unit)
    ph = phot
    phot = cd/cm^2 (derived unit)
    sb = stilb
    skot = .001 apostilb
    stilb = cd/cm^2 (derived unit)
luminance = cd/m^2 (luminance; category unit)
LUMINOUS EFFICACY
    luminous efficacy = lm/W (category unit)
luminous efficacy = lm/W (luminous efficacy; category unit)
LUMINOUS ENERGY
    luminous energy = lm*s (category unit)
luminous energy = lm*s (luminous energy; category unit)
luminous exitance = illuminance (illuminance)
LUMINOUS FLUX
    candle power (spherical) = 12.556 lumen
    lm = lumen
    lumen = cd*sr (derived unit)
    luminous flux = lm (category unit)
luminous flux = lm (luminous flux; category unit)
LUMINOUS INTENSITY
    candela = cd
    cd (candela) = cd (base unit)
    hefner candle = .92 cd
    HK = hefner candle
    luminous intensity = cd (category unit)
luminous intensity = cd (luminous intensity; category unit)
lunation = synodic month (time)
lusec = .000001 torr*m^3/s (power)
lux = lm/m^2 (illuminance; derived unit)
lx = lux (illuminance)
lyr = light yr (length)
M (mega) = 1000000 (prefix)
m (meter) = m (length; base unit)
m (milli) = .001 (prefix)
ma (myria) = 10000 (prefix)
Ma = mach (velocity)
mach (Mach at sea level & 32 dF) = 331.46 m/s (velocity)
MAGNETIC DIPOLE MOMENT
    magnetic dipole moment = J*m/A (category unit)
magnetic dipole moment = J*m/A (magnetic dipole moment; category unit)
magnetic field (constant) = .0000004 pi*H/m (permeability)
MAGNETIC FIELD STRENGTH
    linear current density = magnetic field strength
    linear electric current density = magnetic field strength
    magnetic field strength = A/m (category unit)
    magnetic intensity = magnetic field strength
    magnetization = magnetic field strength
    Oe = oersted
    oersted = 79.5774715459477 A/m
magnetic field strength = A/m (magnetic field strength; category unit)
MAGNETIC FLUX
    amount of magnetization = magnetic flux
    flux linkage = magnetic flux
    magnetic flux = Wb (category unit)
    magnetic mass = magnetic flux
    maxwell = .00000001 Wb
    Mx = maxwell
    Wb = weber
    weber = V*s (derived unit)
magnetic flux = Wb (magnetic flux; category unit)
MAGNETIC FLUX DENSITY
    G = gauss
    gamma = .000000001 T
    gauss = .0001 T
    magnetic flux density = T (category unit)
    magnetic induction flux = magnetic flux density
    magnetic polarization = magnetic flux density
    T = tesla
    tesla = kg/A*s^2 (derived unit)
magnetic flux density = T (magnetic flux density; category unit)
MAGNETIC FORCE
    ampere turn = A*turn (derived unit)
    At = ampere turn
    gilbert = .795775 ampere turn
    magnetic force = ampere turn (category unit)
    magnetic potential = magnetic force
    magnetomotive force = magnetic force
magnetic force = ampere turn (magnetic force; category unit)
magnetic induction flux = magnetic flux density (magnetic flux density)
magnetic intensity = magnetic field strength (magnetic field strength)
magnetic mass = magnetic flux (magnetic flux)
magnetic moment = electromagnetic moment (electromagnetic moment)
magnetic permeability = permeability (permeability)
magnetic polarization = magnetic flux density (magnetic flux density)
magnetic potential = magnetic force (magnetic force)
magnetic potential difference = electric current (electric current)
MAGNETIC VECTOR POTENTIAL
    magnetic vector potential = Wb/m (category unit)
magnetic vector potential = Wb/m (magnetic vector potential; category unit)
magnetization = magnetic field strength (magnetic field strength)
magnetomotive force = magnetic force (magnetic force)
magnum = 2 quart (volume)
marathon = 46145 yard (length)
marine league = nautical league (length)
MASS
    AMU (atomic mass unit) = 1.66044E-27 kg*approx
    ap dr = dram ap
    ap dram = dram ap
    ap gr = grain ap
    ap grain = grain ap
    ap lb = pound ap
    ap oz = oz ap
    ap pound = pound ap
    ap scruple = scruple
    arroba (Mexican arroba) = 26.367 pound
    as (Roman as) = 12 uncia
    assay ton = 29.167 gram
    AT = assay ton
    atomic mass = AMU
    atomic mass unit = AMU
    Babylonian shekel = 8.37 gram
    bag = 94 pound
    bes (Roman bes) = .48 pound
    bowling ball = 16 pound
    carat = carat troy
    carat t = carat troy
    carat troy (troy carat) = .0002 kg
    catty (Chinese catty) = 1.33333333333333 pound
    cental (British cental) = 100 pound
    chin = catty
    cotton bale (US) = 500 pound
    cotton bale Egypt = 750 pound
    crith = .0906 gram
    ct = carat troy
    cwt = short hundredweight
    dalton = AMU
    deadweight ton = long ton
    denarius (Roman denarius) = 60 grain
    dinar (Arabian dinar) = 4.2 gram
    doppelzentner = 100 kg
    dr = dram
    dr ap = dram ap
    dr t = dram troy
    drachma2 (Greek drachma) = 4.2923 gram
    dram (avoirdupois dram) = .0625 oz
    dram ap (apothecary dram) = 3 scruple
    dram troy (troy dram) = 60 grain
    dw t = pennyweight troy
    earth mass = 5.983E+24 kg*approx
    electron mass (electron rest mass) = 9.109558E-31 kg
    English carat = .000205 kg
    funt (Russian funt) = .9 pound
    gm = gram
    gr = grain
    gr ap = grain ap
    gr t = grain troy
    grain (avoirdupois grain) = 1.42857142857143E-04 pound
    grain ap (apothecary grain) = grain
    grain troy (troy grain) = grain
    gram = .001 kg
    Greek obolos = 715.38 milligram
    gross cwt = long hundredweight
    gross hundredweight = long hundredweight
    gross ton = long ton
    hundredweight = short hundredweight
    hyl = gf*s^2/m (derived unit)
    Israeli shekel mass = 14.1 gram
    key = kg
    kg (kilogram) = kg (base unit)
    kin (Japanese kin) = 1.323 pound
    kwan (Japanese kwan) = 8.27 pound
    lb = pound
    lb ap = pound ap
    lb t = pound troy
    lb troy = pound troy
    liang = tael
    libra (Roman libra) = as
    librae = libra
    livre (French livre) = 490 gram
    long hundredweight (avoirdupois long hundredweight) = 112 pound
    long quarter = 28 pound
    long ton (avoirdupois long ton) = 2240 pound
    mass = kg (category unit)
    me = electron mass
    metric ton = 1000 kg
    Mexican libra = 1.015 pound
    mg (milligram) = milligram
    mina (Greek mina) = .9463 pound
    mite (English mite) = .05 grain
    mn = neutron mass
    mp = proton mass
    net hundredweight = short hundredweight
    net ton = short ton
    neutron mass (neutron rest mass) = 1.67492E-27 kg
    obol (Greek obol) = 11.2 grain
    oz (avoirdupois ounce) = .0625 pound
    oz ap (apothecary ounce) = 8 dram ap
    oz t = oz troy
    oz troy (troy ounce) = 480 grain
    pennyweight = pennyweight troy
    pennyweight troy (troy pennyweight) = 24 grain
    pfund (German pfund) = 500 gram
    picul (Chinese picul) = 100 catty
    pondus (Roman pondus) = as
    pood (Russian pood) = 36.11 pound
    pound (avoirdupois pound) = .45359237 kg
    pound ap (apothecary pound) = 12 oz ap
    pound t = pound troy
    pound troy (troy pound) = 12 oz troy
    proton mass (proton rest mass) = 1.672614E-27 kg
    quintal = 100 kg
    Roman obolus = 8.77 grain
    Roman talent = 125 libra
    s ap = scruple
    scruple (apothecary scruple) = 20 grain
    scruple ap = scruple
    scrupulum (Roman scrupulum) = 17.53 grain
    short hundredweight (avoirdupois short hundredweight) = 100 pound
    short quarter = 25 pound
    short ton (avoirdupois short ton) = 2000 pound
    slug = lbf*s^2/ft (derived unit)
    Spanish libra = 1.014 pound
    Spanish quintal = 101.4 pound
    stone = 14 pound
    t = metric ton
    tael (Chinese tael) = .0625 catty
    talent (Greek talent) = 60 mina
    tan = picul
    tn = short ton
    ton = short ton
    tonne = metric ton
    troy carat = carat troy
    troy dr = dram troy
    troy dram = dram troy
    troy gr = grain troy
    troy grain = grain troy
    troy lb = pound troy
    troy oz = oz troy
    troy pennyweight = pennyweight troy
    troy pound = pound troy
    u = AMU
    UK quintal (British quintal) = 100 pound
    UK quintal2 (British quintal) = 112 pound
    uncia (Roman uncia) = 420 grain
    unciae = uncia
    wey mass = 252 pound
mass = kg (mass; category unit)
mass basis bearing capacity = surface density (surface density)
mass basis calorific value = specific energy (specific energy)
mass basis enthalpy = specific energy (specific energy)
mass basis flow rate = mass flow rate (mass flow rate)
mass basis flow rate to area = flow rate area mass basis (flow rate area mass basis)
mass basis flow rate to length = dynamic viscosity (dynamic viscosity)
mass basis specific fuel consumption = specific fuel consumption mass basis (specific fuel consumption mass basis)
mass basis specific heat capacity = specific heat capacity (specific heat capacity)
mass basis throughput = mass flow rate (mass flow rate)
mass concentration = mass density (mass density)
MASS DENSITY
    concentration mass to volume = mass density
    density = mass density
    mass concentration = mass density
    mass density = kg/m^3 (category unit)
    mass to volume concentration = mass density
mass density = kg/m^3 (mass density; category unit)
MASS FLOW RATE
    damping viscosity = mass flow rate
    flow rate mass basis = mass flow rate
    mass basis flow rate = mass flow rate
    mass basis throughput = mass flow rate
    mass flow rate = kg/s (category unit)
    throughput mass basis = mass flow rate
mass flow rate = kg/s (mass flow rate; category unit)
mass to area structural loading = surface density (surface density)
MASS TO LENGTH
    mass to length = kg/m (category unit)
mass to length = kg/m (mass to length; category unit)
mass to mass concentration = dimensionless unit
mass to volume concentration = mass density (mass density)
mass transfer coefficient = velocity (velocity)
maxwell = .00000001 Wb (magnetic flux)
mb = megabyte (data)
me = electron mass (mass)
mean calendar yr = calendar yr (time)
mean solar day = day (time)
mean solar yr = yr (time)
measurement ton = freight ton (volume)
mechanical power = power (power)
mega = 1000000 (prefix)
megabyte = 1024 kilobyte (data)
meter = m (length)
methuselah = 4 magnum (volume)
metre = m (length)
metric ton = 1000 kg (mass)
Mexican libra = 1.015 pound (mass)
mg (milligram) = milligram (mass)
mgd (megagallons per day) = 1000000 gallon/day (volume flow rate)
mho = siemens (conductance)
mi = mile (length)
micro = .000001 (prefix)
micron = .000001 m (length)
mil = .001 in (length)
mile = 5280 foot (length)
millenium = 1000 yr (time)
millennial = millenium (time)
milli = .001 (prefix)
million = 1000000 (prefix)
min = minute (time)
mina (Greek mina) = .9463 pound (mass)
miners inch = 1.5 ft^3/minute (volume flow rate)
minim = 1.66666666666667E-02 dram fluid (volume)
minute = 60 s (time)
mite (English mite) = .05 grain (mass)
mixing power = heat release rate (heat release rate)
mmHg (millimeters of mercury) = mm*Hg weight density (pressure; derived unit)
mn = neutron mass (mass)
mo = month (time)
mobility = electric mobility (electric mobility)
modulus of admittance = conductance (conductance)
modulus of impedance = electric resistance (electric resistance)
mol (mole) = mol (amount of substance; base unit)
molality (of a solute) = mol/kg (molality; category unit)
MOLALITY
    molality (of a solute) = mol/kg (category unit)
molar = universal gas (molar heat capacity)
MOLAR CONDUCTIVITY
    molar conductivity = S/m^2*mol (category unit)
molar conductivity = S/m^2*mol (molar conductivity; category unit)
MOLAR ENERGY
    caloric value mole basis = molar energy
    chemical potential = molar energy
    electrochemical potential = molar energy
    enthalpy mole basis = molar energy
    molar energy = J/mol (category unit)
    mole basis caloric value = molar energy
    mole basis enthalpy = molar energy
molar energy = J/mol (molar energy; category unit)
molar entropy = molar heat capacity (molar heat capacity)
MOLAR HEAT CAPACITY
    gas = universal gas
    molar = universal gas
    molar entropy = molar heat capacity
    molar heat capacity = J/mol*K (category unit)
    mole basis specific heat capacity = molar heat capacity
    specific heat capacity mole basis = molar heat capacity
    universal gas (constant) = 8.31434 J/mol*K
molar heat capacity = J/mol*K (molar heat capacity; category unit)
MOLAR MASS
    molar mass = kg/mol (category unit)
molar mass = kg/mol (molar mass; category unit)
molar refraction = molar volume (molar volume)
MOLAR VOLUME
    concentration volume to mole = molar volume
    molar refraction = molar volume
    molar volume = m^3/mol (category unit)
    mole basis specific volume = molar volume
    specific volume mole basis = molar volume
    standard kilomole volume = 22.414 m^3/kmol
    Vm = standard kilomole volume
    volume to mole concentration = molar volume
molar volume = m^3/mol (molar volume; category unit)
mole = mol (amount of substance)
mole basis caloric value = molar energy (molar energy)
mole basis enthalpy = molar energy (molar energy)
mole basis flow rate = mole flow rate (mole flow rate)
mole basis specific heat capacity = molar heat capacity (molar heat capacity)
mole basis specific volume = molar volume (molar volume)
mole basis throughout = mole flow rate (mole flow rate)
MOLE FLOW RATE
    conversion change rate = mole flow rate
    flow rate mole basis = mole flow rate
    mole basis flow rate = mole flow rate
    mole basis throughout = mole flow rate
    mole flow rate = mol/s (category unit)
    throughput mole basis = mole flow rate
mole flow rate = mol/s (mole flow rate; category unit)
mole to volume concentration = concentration (concentration)
moment of force = energy (energy)
MOMENT OF INERTIA
    moment of inertia = kg*m^2 (category unit)
    moment of inertia of mass = moment of inertia
    polar moment of inertia of mass = moment of inertia
    product of inertia of mass = moment of inertia
moment of inertia = kg*m^2 (moment of inertia; category unit)
MOMENT OF INERTIA OF AREA
    moment of inertia of area = m^4 (category unit)
    moment of section = moment of inertia of area
    polar moment of inertia of area = moment of inertia of area
    product of inertia of area = moment of inertia of area
    static moment of volume = moment of inertia of area
moment of inertia of area = m^4 (moment of inertia of area; category unit)
moment of inertia of mass = moment of inertia (moment of inertia)
MOMENT OF INERTIA OF VOLUME
    moment of inertia of volume = m^5 (category unit)
    polar moment of inertia of volume = moment of inertia of volume
    product of inertia of volume = moment of inertia of volume
moment of inertia of volume = m^5 (moment of inertia of volume; category unit)
moment of section = moment of inertia of area (moment of inertia of area)
MOMENTUM
    impulse = momentum
    linear impulse = momentum
    linear momentum = momentum
    momentum = N*s (category unit)
momentum = N*s (momentum; category unit)
mono = 1 (prefix)
month = 8.33333333333333E-02 yr*approx (time)
monthly = month (time)
mp = proton mass (mass)
mpg (miles per gallon) = mile/gallon (fuel efficiency; derived unit)
mph (miles per hour) = mile/hour (velocity; derived unit)
mu (micro) = .000001 (prefix)
mutual inductance = inductance (inductance)
Mx = maxwell (magnetic flux)
myria = 10000 (prefix)
n (nano) = .000000001 (prefix)
N = newton (force)
Na = avogadro (unknown units)
nail (cloth nail) = .0625 yard (length)
nano = .000000001 (prefix)
naut mi = nautical mile (length)
nautical league = 3 nautical mile (length)
nautical mile = 1852 m (length)
naval shot = 15 fathom (length)
nebuchadnezzar = 10 magnum (volume)
net hundredweight = short hundredweight (mass)
net ton = short ton (mass)
neutron mass (neutron rest mass) = 1.67492E-27 kg (mass)
newton = kg*m/s^2 (force; derived unit)
nibble = .5 byte (data)
nit = cd/m^2 (luminance; derived unit)
NL = loschmidt (number concentration)
nmi = nautical mile (length)
nmile = nautical mile (length)
noggin = .125 quart (volume)
nonillion = 1E+30 (prefix)
novennial = 9 yr (time)
nox = .001 lux (illuminance)
Nt = newton (force)
NUMBER CONCENTRATION
    loschmidt (Loschmidt's constant) = 2.68719E+25 1/m^3
    NL = loschmidt
    number concentration = 1/m^3 (category unit)
number concentration = 1/m^3 (number concentration; category unit)
obol (Greek obol) = 11.2 grain (mass)
octant = .25 pi*rad (plane angle)
octennial = 8 yr (time)
octillion = 1E+27 (prefix)
Oe = oersted (magnetic field strength)
oersted = 79.5774715459477 A/m (magnetic field strength)
ohm = V/A (electric resistance; derived unit)
oil arroba (Spanish oil arroba) = 3.32 gallon (volume)
oil barrel = petroleum barrel (volume)
olympiad = 4 yr*approx (time)
omega = ohm (electric resistance)
omer (Israeli omer) = .45 peck (volume)
one = 1 (prefix)
ounce = "oz"
oz (avoirdupois ounce) = .0625 pound (mass)
oz = replacement for "ounce"
oz ap (apothecary ounce) = 8 dram ap (mass)
oz fl = oz fluid (volume)
oz fluid (fluid ounce) = .25 gill (volume)
oz t = oz troy (mass)
oz troy (troy ounce) = 480 grain (mass)
P (peta) = 1E+15 (prefix)
p (pico) = .000000000001 (prefix)
P = poise (dynamic viscosity)
Pa = pascal (pressure)
pace = 30 in (length)
palm = 3 in (length)
parasang = 3.5 mile (length)
parsec = au*rad/arc sec (length; derived unit)
pascal = N/m^2 (pressure; derived unit)
pc = parsec (length)
pdl = poundal (force)
peck (dry peck) = 2 dry gallon (volume)
pennyweight = pennyweight troy (mass)
pennyweight troy (troy pennyweight) = 24 grain (mass)
per (" per ") = "/"
percent = .01
perch = rod (length)
perennial = yr (time)
perigon = circle (plane angle)
PERMEABILITY
    magnetic field (constant) = .0000004 pi*H/m
    magnetic permeability = permeability
    permeability = H/m (category unit)
    u0 = magnetic field
permeability = H/m (permeability; category unit)
permeability2 = area (area)
permeance = inductance (inductance)
PERMITTIVITY
    dialectric permittivity = permittivity
    dialectric strength = permittivity
    electric field (constant) = 8.8542E-12 F/m
    epsilon0 = electric field
    permittivity = F/m (category unit)
permittivity = F/m (permittivity; category unit)
peta = 1E+15 (prefix)
petroleum barrel = 42 gallon (volume)
pfund (German pfund) = 500 gram (mass)
ph = phot (luminance)
phot = cd/cm^2 (luminance; derived unit)
pi = 3.14159265358979
pica (typography pica) = .166666666666667 in (length)
pico = .000000000001 (prefix)
picul (Chinese picul) = 100 catty (mass)
pieze = 1000 Pa (pressure)
pint (fluid pint) = .5 quart (volume)
pipe = 2 hogshead (volume)
pitch = frequency (frequency)
pk = peck (volume)
planck (Planck constant) = 6.626196E-34 J*s (angular momentum)
PLANE ANGLE
    arc deg = degree
    arc degree = degree
    arc min = arc minute
    arc minute (minute of arc) = 1.66666666666667E-02 arc degree
    arc s (second of arc) = 1.66666666666667E-02 arc minute
    arc sec = arc s
    arc second = arc s
    centesimal minute = .01 grade
    centesimal second = .0001 grade
    circle = 2 pi*rad
    deg = degree
    degree (Pi rad / 180) = 1.74532925199433E-02 rad
    grad = grade
    grade = .015707963267949 rad
    octant = .25 pi*rad
    perigon = circle
    plane angle = rad (category unit)
    quadrant = .5 pi*rad
    r = rad
    rad (radian) = rad (base unit)
    radian = rad
    rev = revolution
    revolution = 2 pi*rad
    sextant = .333333333333333 pi*rad
    sign = .166666666666667 pi*rad
    turn = 2 pi*rad
plane angle = rad (plane angle; category unit)
point (typography point) = .013837 in (length)
poise = gram/cm*s (dynamic viscosity; derived unit)
polar moment of inertia of area = moment of inertia of area (moment of inertia of area)
polar moment of inertia of mass = moment of inertia (moment of inertia)
polar moment of inertia of volume = moment of inertia of volume (moment of inertia of volume)
pole = rod (length)
pondus (Roman pondus) = as (mass)
pony = .5 jigger (volume)
pood (Russian pood) = 36.11 pound (mass)
potential = electric potential (electric potential)
potential difference = electric potential (electric potential)
pound (avoirdupois pound) = .45359237 kg (mass)
pound ap (apothecary pound) = 12 oz ap (mass)
pound force = pound*g (force; derived unit)
pound t = pound troy (mass)
pound troy (troy pound) = 12 oz troy (mass)
poundal = ft*pound/s^2 (force; derived unit)
POWER
    acoustical power = power
    electrical power = power
    heat flow rate = power
    horsepower = 550 ft*pound*g/sec
    hp = horsepower
    linear power = power
    lusec = .000001 torr*m^3/s
    mechanical power = power
    power = W (category unit)
    radiant flux = power
    radiant power = power
    W = watt
    watt = J/s (derived unit)
power = W (power; category unit)
power to area = heat flux density (heat flux density)
PREFIXES
    a (atto) = 1E-18
    atto = 1E-18
    bi = 2
    billion = 1000000000
    c (centi) = .01
    centi = .01
    centimilli = .00001
    cm (centimilli) = .00001
    d (deci) = .1
    D (deka) = 10
    da (deka) = 10
    dec = 10
    deci = .1
    decillion = 1E+33
    decimilli = .0001
    deka = 10
    demi = .5
    dm (decimilli) = .0001
    double = 2
    duodec = 12
    E (exa) = 1E+18
    eighth = .125
    exa = 1E+18
    f (femto) = .000000000000001
    femto = .000000000000001
    G (giga) = 1000000000
    giga = 1000000000
    googol = 1E+100
    h (hecto) = 100
    half = .5
    hecto = 100
    hectokilo = 100000
    hk (hectokilo) = 100000
    hundred = 100
    k (kilo) = 1000
    kilo = 1000
    M (mega) = 1000000
    m (milli) = .001
    ma (myria) = 10000
    mega = 1000000
    micro = .000001
    milli = .001
    million = 1000000
    mono = 1
    mu (micro) = .000001
    myria = 10000
    n (nano) = .000000001
    nano = .000000001
    nonillion = 1E+30
    octillion = 1E+27
    one = 1
    P (peta) = 1E+15
    p (pico) = .000000000001
    peta = 1E+15
    pico = .000000000001
    quadr = 4
    quadri = 4
    quadrillion = 1E+15
    quadruple = 4
    quarter = .25
    quin = 5
    quintillion = 1E+18
    semi = .5
    septillion = 1E+24
    sesqu = 1.5
    sesqui = 1.5
    sex = 6
    sextillion = 1E+21
    T (tera) = 1000000000000
    ten = 10
    tera = 1000000000000
    thousand = 1000
    thrice = 3
    tri = 3
    trillion = 1000000000000
    triple = 3
    u (micro) = .000001
    undec = 11
    vic = 20
    Y (myria) = 10000
pregnancy = 9 month*approx (time)
PRESSURE
    atm = atmosphere
    atmosphere = 101325 Pa
    bar = 100000 Pa
    barie = .1 Pa
    barye = .1 Pa
    calorific value volume basis = pressure
    draft = pressure
    energy density = pressure
    mmHg (millimeters of mercury) = mm*Hg weight density (derived unit)
    Pa = pascal
    pascal = N/m^2 (derived unit)
    pieze = 1000 Pa
    pressure = N/m^2 (category unit)
    psi (pounds per square inch) = pound*g/in^2 (derived unit)
    radiant energy density = pressure
    sound pressure = pressure
    standard atmosphere = atmosphere
    stress = pressure
    torr = mm*Hg weight density (derived unit)
    vacuum = pressure
    volume basis calorific value = pressure
pressure = N/m^2 (pressure; category unit)
pressure drop to length = weight density (weight density)
product of inertia of area = moment of inertia of area (moment of inertia of area)
product of inertia of mass = moment of inertia (moment of inertia)
product of inertia of volume = moment of inertia of volume (moment of inertia of volume)
proof = .005
proton mass (proton rest mass) = 1.672614E-27 kg (mass)
psi (pounds per square inch) = pound*g/in^2 (pressure; derived unit)
pt = pint (volume)
qt = quart (volume)
quadr = 4 (prefix)
quadrant = .5 pi*rad (plane angle)
quadri = 4 (prefix)
quadrillion = 1E+15 (prefix)
quadruple = 4 (prefix)
quantity of electricity = electric charge (electric charge)
quantity of heat = energy (energy)
quart (fluid quart) = .25 gallon (volume)
quarter = .25 (prefix)
quin = 5 (prefix)
quindecennial = 15 yr (time)
quinquennial = 5 yr (time)
quintal = 100 kg (mass)
quintillion = 1E+18 (prefix)
quire (of paper) = 25
r = rad (plane angle)
R = roentgen (radiation exposure)
rad (radian) = rad (plane angle; base unit)
Rad = .01 Gy (absorbed dose)
radian = rad (plane angle)
RADIANCE
    radiance = W/m^2*sr (category unit)
radiance = W/m^2*sr (radiance; category unit)
radiant energy = energy (energy)
radiant energy density = pressure (pressure)
radiant exitance = heat flux density (heat flux density)
radiant flux = power (power)
radiant flux received = heat flux density (heat flux density)
RADIANT INTENSITY
    radiant intensity = W/sr (category unit)
radiant intensity = W/sr (radiant intensity; category unit)
radiant power = power (power)
RADIATION EXPOSURE
    R = roentgen
    roentgen = .000258 A*s/kg
radiation exposure = specific charge (specific charge)
radioactivity = frequency (frequency)
rankine = dR (thermodynamic temperature)
rd = rod (length)
reactance = electric resistance (electric resistance)
reaction rate = concentration rate (concentration rate)
ream (of paper) = 20 quire
reaumur = dRe (thermodynamic temperature)
refrigeration = 12000 BTU/ton*hour (unknown units)
register ton = 100 ft^3 (volume)
rehoboam = 3 magnum (volume)
RELUCTANCE
    reluctance = 1/H (category unit)
reluctance = 1/H (reluctance; category unit)
RELUCTIVITY
    reluctivity = 1/H*m (category unit)
reluctivity = 1/H*m (reluctivity; category unit)
rem = .01 Sv (dose equiv)
REPLACED VALUES
    / = replacement for " per "
    ^2 = replacement for "squared"
    ^3 = replacement for "cubed"
    ap = replacement for "apoth"
    ap = replacement for "apothecary"
    equiv = replacement for "equivalent"
    fl = replacement for "liq"
    fl = replacement for "liquid"
    foot (" foot ") = replacement for "'"
    foot = replacement for "feet"
    inch (" inch ") = replacement for """
    inch = replacement for "inches"
    intl = replacement for "international"
    oz = replacement for "ounce"
    UK ("UK ") = replacement for "imp "
    UK = replacement for "British"
    UK = replacement for "imperial"
    y ("y ") = replacement for "ies "
    yr = replacement for "year"
REPLACEMENTS
    " = " inch "
    ' = " foot "
    *approx = ""
    *avg = ""
    *exact = ""
    apoth = "ap"
    apothecary = "ap"
    approx = ""
    avdp = ""
    avg = ""
    avoirdupois = ""
    British = "UK"
    cubed = "^3"
    equivalent = "equiv"
    exact = ""
    feet = "foot"
    ies ("ies ") = "y "
    imp ("imp ") = "UK "
    imperial = "UK"
    inches = "inch"
    international = "intl"
    liq = "fl"
    liquid = "fl"
    ounce = "oz"
    per (" per ") = "/"
    squared = "^2"
    year = "yr"
resistance = electric resistance (electric resistance)
RESISTIVITY
    resistivity = ohm*m (category unit)
    volume resistivity = resistivity
resistivity = ohm*m (resistivity; category unit)
rev = revolution (plane angle)
revolution = 2 pi*rad (plane angle)
reyn = lbf*s/in^2 (dynamic viscosity; derived unit)
rhe = 10 m^2/N*s (fluidity)
ri (Japanese ri) = 2.44 mile (length)
rod (surveyors rod) = 25 link (length)
roentgen = .000258 A*s/kg (radiation exposure)
Roman amphora = 6.84 gallon (volume)
Roman cubit = 17.5 in (length)
Roman foot = .971 foot (length)
Roman mile = 5000 Roman foot (length)
Roman obolus = 8.77 grain (mass)
Roman talent = 125 libra (mass)
rood = 40 rod^2 (area)
rope = 20 ft (length)
rotational acceleration = angular acceleration (angular acceleration)
rotational frequency = angular velocity (angular velocity)
rpm (revolutions per minute) = revolution/minute (angular velocity; derived unit)
rutherford = 1000000 Bq (activity)
rydberg = 1.36054 electron volt (energy)
s (second) = s (time; base unit)
S = siemens (conductance)
s ap = scruple (mass)
sA = statampere (electric current)
sabin = ft^2 (area; derived unit)
sack = 3 bushel (volume)
salmanazar = 6 magnum (volume)
sazhen (Russian sazhen) = 6.9 foot (length)
sb = stilb (luminance)
sC = statcoulomb (electric charge)
Sc frequency (cesium atom frequency) = 9192631770 1/s (frequency)
score = 20
scotch = 86 proof
scruple (apothecary scruple) = 20 grain (mass)
scruple ap = scruple (mass)
scrupulum (Roman scrupulum) = 17.53 grain (mass)
seam = 8 bushel (volume)
sec = s (time)
second = s (time)
section (of land) = mile^2 (area; derived unit)
section modulus = volume (volume)
self inductance = inductance (inductance)
semi = .5 (prefix)
septennial = 7 yr (time)
septillion = 1E+24 (prefix)
sesqu = 1.5 (prefix)
sesqui = 1.5 (prefix)
sex = 6 (prefix)
sextant = .333333333333333 pi*rad (plane angle)
sextillion = 1E+21 (prefix)
sF = statfarad (capacitance)
sH = stathenry (inductance)
shaku (Japanese shaku) = 11.93 in (length)
shipping ton = freight ton (volume)
short hundredweight (avoirdupois short hundredweight) = 100 pound (mass)
short quarter = 25 pound (mass)
short ton (avoirdupois short ton) = 2000 pound (mass)
shot = oz fluid (volume)
sidereal day = 86164.091 s (time)
sidereal month = 27.3217 day (time)
sidereal yr (sidereal year) = 365.2564 day (time)
siemens = A/V (conductance; derived unit)
sievert = m^2/s^2 (dose equiv; derived unit)
sigma = us (time)
sign = .166666666666667 pi*rad (plane angle)
skein = 120 yd (length)
skot = .001 apostilb (luminance)
slug = lbf*s^2/ft (mass; derived unit)
soccer field = 100 yard (length)
SOL = speed of light (velocity)
SOLID ANGLE
    solid angle = sr (category unit)
    spat = 4 pi*sr
    sphere = 4 pi*sr
    sr (steradian) = sr (base unit)
    steradian = sr
solid angle = sr (solid angle; category unit)
solubility = concentration (concentration)
sound intensity = heat flux density (heat flux density)
sound pressure = pressure (pressure)
span (cloth span) = 9 in (length)
Spanish libra = 1.014 pound (mass)
Spanish quintal = 101.4 pound (mass)
spat = 4 pi*sr (solid angle)
SPECIFIC CHARGE
    radiation exposure = specific charge
    specific charge = C/kg (category unit)
specific charge = C/kg (specific charge; category unit)
specific conductance = conductivity (conductivity)
SPECIFIC ENERGY
    absorbed dose = specific energy
    calorific value mass basis = specific energy
    dose equiv = specific energy
    enthalpy mass basis = specific energy
    mass basis calorific value = specific energy
    mass basis enthalpy = specific energy
    specific energy = m^2/s^2 (category unit)
    TNT = 4600000 m^2/s^2
specific energy = m^2/s^2 (specific energy; category unit)
specific entropy = specific heat capacity (specific heat capacity)
SPECIFIC FUEL CONSUMPTION MASS BASIS
    mass basis specific fuel consumption = specific fuel consumption mass basis
    specific fuel consumption mass basis = kg/J (category unit)
specific fuel consumption mass basis = kg/J (specific fuel consumption mass basis; category unit)
specific fuel consumption volume basic = compressibility (compressibility)
SPECIFIC HEAT CAPACITY
    mass basis specific heat capacity = specific heat capacity
    specific entropy = specific heat capacity
    specific heat capacity = J/kg*K (category unit)
    specific heat capacity mass basis = specific heat capacity
specific heat capacity = J/kg*K (specific heat capacity; category unit)
specific heat capacity mass basis = specific heat capacity (specific heat capacity)
specific heat capacity mole basis = molar heat capacity (molar heat capacity)
specific impact energy = surface tension (surface tension)
SPECIFIC SURFACE AREA
    specific surface area = m^2/kg (category unit)
specific surface area = m^2/kg (specific surface area; category unit)
SPECIFIC VOLUME
    specific volume = m^3/kg (category unit)
    yield = specific volume
specific volume = m^3/kg (specific volume; category unit)
specific volume mole basis = molar volume (molar volume)
speed = velocity (velocity)
speed of light (in vacuum) = 299792558 m/s*approx (velocity)
sphere = 4 pi*sr (solid angle)
spindle = 14400 yard (length)
spring = 92.9583333333333 day*approx (time)
square = 100 ft^2 (area)
squared = "^2"
sr (steradian) = sr (solid angle; base unit)
st = stere (volume)
St = stoke (kinematic viscosity)
stadia (Greek stadia) = 400 Greek cubit (length)
stadium (Roman stadium) = 202 yard (length)
standard atmosphere = atmosphere (pressure)
standard barrel = dry barrel (volume)
standard kilomole volume = 22.414 m^3/kmol (molar volume)
statampere = .000000000333564 A (electric current)
statcoulomb = .000000000333564 C (electric charge)
statfarad = 1.11265E-12 F (capacitance)
stathenry = 898755400000 H (inductance)
static moment of area = volume (volume)
STATIC MOMENT OF MASS
    static moment of mass = kg*m (category unit)
static moment of mass = kg*m (static moment of mass; category unit)
static moment of volume = moment of inertia of area (moment of inertia of area)
statohm = 898755400000 ohm (electric resistance)
statute league = league (length)
statute mile = mile (length)
statvolt = 299.7925 V (electric potential)
stefan-boltzmann (Stefan-Boltzmann constant) = .000000056697 W/m^2*K^4 (unknown units)
steradian = sr (solid angle)
stere = m^3 (volume; derived unit)
sthene = 1000 N (force)
stilb = cd/cm^2 (luminance; derived unit)
STIMULATED ABSORPTION
    stimulated absorption = s/kg (category unit)
    stimulated emission = stimulated absorption
stimulated absorption = s/kg (stimulated absorption; category unit)
stimulated emission = stimulated absorption (stimulated absorption)
stoke = .0001 m^2/s (kinematic viscosity)
stone = 14 pound (mass)
stress = pressure (pressure)
stretchability = compressibility (compressibility)
strike = 2 bushel (volume)
summer = 93.5416666666667 day*approx (time)
sun (Japanese sun) = 1.193 in (length)
surface area = area (area)
surface concentration = adsorption (adsorption)
SURFACE DENSITY
    bearing capacity mass basis = surface density
    mass basis bearing capacity = surface density
    mass to area structural loading = surface density
    surface density = kg/m^2 (category unit)
surface density = kg/m^2 (surface density; category unit)
surface density of charge = electric flux density (electric flux density)
surface energy = energy (energy)
surface pressure = surface tension (surface tension)
SURFACE TENSION
    elasticity = surface tension
    intensity of force = surface tension
    interfacial tension = surface tension
    langley = calorie/cm^2 (derived unit)
    specific impact energy = surface tension
    surface pressure = surface tension
    surface tension = N/m (category unit)
    tension = surface tension
surface tension = N/m (surface tension; category unit)
survey foot = .304800609601219 m (length)
surveyors chain = chain (length)
surveyors furlong = furlong (length)
surveyors link = link (length)
surveyors rod = rod (length)
susceptance = conductance (conductance)
Sv = sievert (dose equiv)
sV = statvolt (electric potential)
synodic month = 29.5306 day (time)
T (tera) = 1000000000000 (prefix)
t = metric ton (mass)
T = tesla (magnetic flux density)
tablespoon = .5 oz fluid (volume)
tael (Chinese tael) = .0625 catty (mass)
talent (Greek talent) = 60 mina (mass)
tan = picul (mass)
tb = terabyte (data)
tbsp = tablespoon (volume)
tea cup = 6 oz fluid (volume)
teaspoon = .333333333333333 tablespoon (volume)
temperature = thermodynamic temperature (thermodynamic temperature)
temperature difference = thermodynamic temperature (thermodynamic temperature)
ten = 10 (prefix)
tension = surface tension (surface tension)
tera = 1000000000000 (prefix)
terabyte = 1024 gigabyte (data)
tesla = kg/A*s^2 (magnetic flux density; derived unit)
therm = 100000 BTU (energy)
THERMAL CONDUCTANCE
    thermal conductance = W/K (category unit)
thermal conductance = W/K (thermal conductance; category unit)
THERMAL CONDUCTIVITY
    heat conductivity = thermal conductivity
    thermal conductivity = W/m*K (category unit)
thermal conductivity = W/m*K (thermal conductivity; category unit)
thermal diffusion = kinematic viscosity (kinematic viscosity)
thermal flux = heat flux density (heat flux density)
THERMAL RESISTANCE
    thermal resistance = K*m^2/W (category unit)
thermal resistance = K*m^2/W (thermal resistance; category unit)
thermie = 1000000 calorie (energy)
thermochemical calorie = 4.184 J (energy)
THERMODYNAMIC TEMPERATURE
    absolute temperature = thermodynamic temperature
    celsius = dC
    centigrade = dC
    dC (Celsius degree) = K
    dF (Fahrenheit degree) = .555555555555556 K
    dK = K
    dR (Rankine degree) = .555555555555556 K
    dRe (Reaumur degree) = 1.25 K
    fahrenheit = dF
    K (Kelvin degree) = K (base unit)
    kelvin = K
    rankine = dR
    reaumur = dRe
    temperature = thermodynamic temperature
    temperature difference = thermodynamic temperature
    thermodynamic temperature = K (category unit)
thermodynamic temperature = K (thermodynamic temperature; category unit)
thousand = 1000 (prefix)
thrice = 3 (prefix)
throughput mass basis = mass flow rate (mass flow rate)
throughput mole basis = mole flow rate (mole flow rate)
throughput volume basis = volume flow rate (volume flow rate)
tick = .03125 $ (currency)
timber foot = ft^3 (volume; derived unit)
TIME
    annual = yr
    autumn = 89.6666666666667 day*approx
    calendar yr (calendar year) = 365 day
    cen = century
    centennial = century
    century = 100 yr
    d = day
    day = 24 hour
    decade = 10 yr
    diurnal = day
    ennial = yr
    fiscal yr (fiscal year) = 360 day
    fortnight = 2 week
    fy = fiscal yr
    h = hour
    hour = 60 minute
    hr = hour
    leap yr (leap year) = 366 day
    lunation = synodic month
    mean calendar yr = calendar yr
    mean solar day = day
    mean solar yr = yr
    millenium = 1000 yr
    millennial = millenium
    min = minute
    minute = 60 s
    mo = month
    month = 8.33333333333333E-02 yr*approx
    monthly = month
    novennial = 9 yr
    octennial = 8 yr
    olympiad = 4 yr*approx
    perennial = yr
    pregnancy = 9 month*approx
    quindecennial = 15 yr
    quinquennial = 5 yr
    s (second) = s (base unit)
    sec = s
    second = s
    septennial = 7 yr
    sidereal day = 86164.091 s
    sidereal month = 27.3217 day
    sidereal yr (sidereal year) = 365.2564 day
    sigma = us
    spring = 92.9583333333333 day*approx
    summer = 93.5416666666667 day*approx
    synodic month = 29.5306 day
    time = s (category unit)
    week = 7 day
    weekend = 2 day
    weekly = week
    winter = 89.0416666666667 day*approx
    wk = week
    yr (year) = 365.24219879 day*approx
time = s (time; category unit)
tn = short ton (mass)
TNT = 4600000 m^2/s^2 (specific energy)
ton = short ton (mass)
ton force = metric ton*g (force; derived unit)
tonne = metric ton (mass)
torque = energy (energy)
torr = mm*Hg weight density (pressure; derived unit)
torsion of a curve = wave number (wave number)
tou (Chinese tou) = 2.74 gallon (volume)
township = 36 mile^2 (area)
transmissivity = kinematic viscosity (kinematic viscosity)
tri = 3 (prefix)
trillion = 1000000000000 (prefix)
triple = 3 (prefix)
troy carat = carat troy (mass)
troy dr = dram troy (mass)
troy dram = dram troy (mass)
troy gr = grain troy (mass)
troy grain = grain troy (mass)
troy lb = pound troy (mass)
troy oz = oz troy (mass)
troy pennyweight = pennyweight troy (mass)
troy pound = pound troy (mass)
tsp = teaspoon (volume)
tun (English tun) = 8 barrel (volume)
turn = 2 pi*rad (plane angle)
twistability = compressibility (compressibility)
u (micro) = .000001 (prefix)
u = AMU (mass)
U = micron (length)
u0 = magnetic field (permeability)
UK ("UK ") = replacement for "imp "
UK (British) = 1.000002
UK = replacement for "British"
UK = replacement for "imperial"
UK bushel (British bushel) = 4 UK peck (volume)
UK caliber (British caliber) = .001
UK fl oz = UK oz fluid (volume)
UK fluid oz = UK oz fluid (volume)
UK gallon (British gallon) = 277.41945 in^3*approx (volume)
UK mile (British mile) = 1609.34721869 m (length)
UK oz = UK oz fluid (volume)
UK oz fl = UK oz fluid (volume)
UK oz fluid (British fluid ounce) = .05 UK pint (volume)
UK peck (British peck) = 554.84 in^3*approx (volume)
UK pint (British pint) = .5 UK quart (volume)
UK quart (British quart) = .25 UK gallon (volume)
UK quintal (British quintal) = 100 pound (mass)
UK quintal2 (British quintal) = 112 pound (mass)
UK thermal unit = BTU (energy)
uncia (Roman uncia) = 420 grain (mass)
unciae = uncia (mass)
undec = 11 (prefix)
universal gas (constant) = 8.31434 J/mol*K (molar heat capacity)
UNKNOWN UNITS
    avogadro (Avogadro's number) = 6.022169E+23 1/mol*approx
    faraday (Faraday constant) = 96486.7 C/mol
    Fdy = faraday
    gravitation (constant) = .00000000006664 N*m^2/kg^2
    L = avogadro
    Na = avogadro
    refrigeration = 12000 BTU/ton*hour
    stefan-boltzmann (Stefan-Boltzmann constant) = .000000056697 W/m^2*K^4
US dollar = $ (currency)
V = volt (electric potential)
vacuum = pressure (pressure)
vara (Mexican vara) = 32.99 in (length)
vedro (Russian vedro) = 3.25 gallon (volume)
VELOCITY
    admiralty knot = 6080 ft/hour
    c = speed of light
    corrosion rate = velocity
    flow rate to area volume basis = velocity
    fps (feet per second) = ft/s (derived unit)
    ips (inches per second) = in/s (derived unit)
    knot (nautical miles per hour) = nmi/hour (derived unit)
    kph (kilometers per hour) = km/hour (derived unit)
    linear speed = velocity
    linear velocity = velocity
    Ma = mach
    mach (Mach at sea level & 32 dF) = 331.46 m/s
    mass transfer coefficient = velocity
    mph (miles per hour) = mile/hour (derived unit)
    SOL = speed of light
    speed = velocity
    speed of light (in vacuum) = 299792558 m/s*approx
    velocity = m/s (category unit)
    velocity linear = velocity
    volume basis flow rate to area = velocity
velocity = m/s (velocity; category unit)
velocity angular = angular velocity (angular velocity)
velocity linear = velocity (velocity)
verst (Russian verst) = 3500 foot (length)
vic = 20 (prefix)
viscosity absolute = dynamic viscosity (dynamic viscosity)
viscosity dynamic = dynamic viscosity (dynamic viscosity)
viscosity kinematic = kinematic viscosity (kinematic viscosity)
Vm = standard kilomole volume (molar volume)
volt = W/A (electric potential; derived unit)
voltage = electric potential (electric potential)
voltage potential = electric potential (electric potential)
VOLUME
    amphora (Greek amphora) = 10.3 gallon
    arroba oil = oil arroba
    arroba wine = wine arroba
    balthazar = 8 magnum
    barrel = 31.5 gallon
    bath (Israeli bath) = 2.25 in^3
    bbl = petroleum barrel
    beer gallon (English beer gallon) = 282 in^3
    board foot = 144 in^3
    bu = bushel
    bushel (dry bushel) = 4 peck
    Canadian gallon = .00454609 m^3
    capacity = volume
    cc (cubic centimeters) = cm^3 (derived unit)
    chetvert (Russian chetvert) = 5.96 bushel
    coomb = 4 bushel
    cord (of wood) = 128 ft^3
    cord foot (of wood) = 16 ft^3
    cu = cup
    cup = .5 pint
    displacement ton = 35 ft^3
    dr fl = dram fluid
    dr fluid = dram fluid
    dram fl = dram fluid
    dram fluid (fluid dram) = .125 oz fluid
    drop = .03 cm^3
    dry barrel = 7056 in^3
    dry gallon = 268.8025 in^3*approx
    dry pint = .5 dry quart
    dry quart = .25 dry gallon
    ephah (Israeli ephah) = 10 omer
    fbm = board foot
    fifth = .8 quart
    firkin = 9 gallon
    fl dr = dram fluid
    fl dram = dram fluid
    fl oz = oz fluid
    fluid dr = dram fluid
    fluid dram = dram fluid
    fluid oz = oz fluid
    freight ton = 40 ft^3
    gal = gallon
    gallon = 231 in^3
    gill = .5 cup
    hd = hogshead
    hekat (Israeli hekat) = 291 in^3
    hhd = hogshead
    hogshead = 2 barrel
    jeroboam = .8 gallon
    jigger = 1.5 oz fluid
    kilderkin = 18 gallon
    koku (Japanese koku) = 47.6 gallon
    l = liter
    last = 80 bushel
    liter = .001 m^3
    load = 1.9 yd^3
    magnum = 2 quart
    measurement ton = freight ton
    methuselah = 4 magnum
    minim = 1.66666666666667E-02 dram fluid
    nebuchadnezzar = 10 magnum
    noggin = .125 quart
    oil arroba (Spanish oil arroba) = 3.32 gallon
    oil barrel = petroleum barrel
    omer (Israeli omer) = .45 peck
    oz fl = oz fluid
    oz fluid (fluid ounce) = .25 gill
    peck (dry peck) = 2 dry gallon
    petroleum barrel = 42 gallon
    pint (fluid pint) = .5 quart
    pipe = 2 hogshead
    pk = peck
    pony = .5 jigger
    pt = pint
    qt = quart
    quart (fluid quart) = .25 gallon
    register ton = 100 ft^3
    rehoboam = 3 magnum
    Roman amphora = 6.84 gallon
    sack = 3 bushel
    salmanazar = 6 magnum
    seam = 8 bushel
    section modulus = volume
    shipping ton = freight ton
    shot = oz fluid
    st = stere
    standard barrel = dry barrel
    static moment of area = volume
    stere = m^3 (derived unit)
    strike = 2 bushel
    tablespoon = .5 oz fluid
    tbsp = tablespoon
    tea cup = 6 oz fluid
    teaspoon = .333333333333333 tablespoon
    timber foot = ft^3 (derived unit)
    tou (Chinese tou) = 2.74 gallon
    tsp = teaspoon
    tun (English tun) = 8 barrel
    UK bushel (British bushel) = 4 UK peck
    UK fl oz = UK oz fluid
    UK fluid oz = UK oz fluid
    UK gallon (British gallon) = 277.41945 in^3*approx
    UK oz = UK oz fluid
    UK oz fl = UK oz fluid
    UK oz fluid (British fluid ounce) = .05 UK pint
    UK peck (British peck) = 554.84 in^3*approx
    UK pint (British pint) = .5 UK quart
    UK quart (British quart) = .25 UK gallon
    vedro (Russian vedro) = 3.25 gallon
    volume = m^3 (category unit)
    wey = 40 bushel
    wine arroba (Spanish wine arroba) = 4.3 gallon
    wine bottle = .800633 quart
volume = m^3 (volume; category unit)
volume basis calorific value = pressure (pressure)
volume basis flow rate = volume flow rate (volume flow rate)
volume basis flow rate to area = velocity (velocity)
volume basis flow rate to length = kinematic viscosity (kinematic viscosity)
volume basis specific fuel consumption = compressibility (compressibility)
volume basis throughput = volume flow rate (volume flow rate)
volume conductivity = conductivity (conductivity)
volume density of charge = electric charge density (electric charge density)
VOLUME FLOW RATE
    cfs (cubic feet per second) = ft^3/s (derived unit)
    flow rate volume basis = volume flow rate
    gpm (gallons per minute) = gal/min (derived unit)
    mgd (megagallons per day) = 1000000 gallon/day
    miners inch = 1.5 ft^3/minute
    throughput volume basis = volume flow rate
    volume basis flow rate = volume flow rate
    volume basis throughput = volume flow rate
    volume flow rate = m^3/s (category unit)
volume flow rate = m^3/s (volume flow rate; category unit)
volume resistivity = resistivity (resistivity)
volume to length = area (area)
volume to mole concentration = molar volume (molar volume)
volume to volume concentration = dimensionless unit
VOLUMETRIC HEAT CAPACITY
    volumetric heat capacity = J/m^3*K (category unit)
    volumetric heat transfer coefficient = volumetric heat capacity
volumetric heat capacity = J/m^3*K (volumetric heat capacity; category unit)
volumetric heat transfer coefficient = volumetric heat capacity (volumetric heat capacity)
W = watt (power)
watt = J/s (power; derived unit)
WAVE NUMBER
    area to volume = wave number
    capture unit = wave number
    curvature of a curve = wave number
    diopter (lens power) = 1/m (derived unit)
    kayser = 100 1/m
    lens power = wave number
    torsion of a curve = wave number
    wave number = 1/m (category unit)
wave number = 1/m (wave number; category unit)
wavelength = length (length)
Wb = weber (magnetic flux)
weber = V*s (magnetic flux; derived unit)
week = 7 day (time)
weekend = 2 day (time)
weekly = week (time)
weight = force (force)
WEIGHT DENSITY
    H20 density (water weight density) = .0885472440945 kg/m^2*s^2
    Hg weight density = 133322.368421 kg/m^2*s^2
    pressure drop to length = weight density
    weight density = N/m^3 (category unit)
weight density = N/m^3 (weight density; category unit)
wey = 40 bushel (volume)
wey mass = 252 pound (mass)
Wh (watt hour) = W*hour (energy; derived unit)
width = length (length)
wine arroba (Spanish wine arroba) = 4.3 gallon (volume)
wine bottle = .800633 quart (volume)
winter = 89.0416666666667 day*approx (time)
wk = week (time)
work = energy (energy)
WWII = 3.5 megaton*TNT (energy)
y ("y ") = replacement for "ies "
Y (myria) = 10000 (prefix)
yard = 3 ft (length)
yd = yard (length)
year = "yr"
yield = specific volume (specific volume)
yr (year) = 365.24219879 day*approx (time)
yr = replacement for "year"

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