Units marked with asterisks are base, derived, or supplementary units of the Systeme International.
Unit Abbreviation
abampere - spell out
abohm - spell out
abvolt - spell out
amagat - spell out
*ampere - A
ampere hour - A h
ampere turns per meter - At/m
angstrom - Å
arc minute - arc min
astronomical unit - AU
atmosphere - atm
atmosphere, standard - As
atomic mass unit - u
atomic parts per million - at. ppm
atomic percent - at. %
atomic time unit - atu
atomic unit- a.u.
attofarad - aF
bar - spell out
bark - spell out
barn - b
barye - spell out
biot - Bi
bit or bits - spell out
blobs per hundred microns - blobs/(100 um)
bohr - spell out
British thermal unit - Btu
bytes - spell out
calorie - cal
*candela - cd
candelas per square meter - cd/m2
candlepower - cp
centimeter - cm
centipoise - cP
*coulomb - C
counts per minute - counts/min, cpm
counts per second - counts/s
cubic centimeter - cm3, (cc not rec.)
curie - Ci
cycle - spell out, c
cycles per second - cps, c/s
day d, - or spell out
debye - D
decibel - dB, dBm
degree - [ring], deg
degrees - Baumé [ring]B
degrees - Celsius (centigrade) [ring]C
degrees - Fahrenheit [ring]F
degrees - Kelvin K
disintegrations per minute - dis/min
disintegrations per minute per microgram - dis/min ug
disintegrations per second - dis/s
dyne - dyn
electromagnetic unit - emu
electron barn - eb
electrons per atom - e/at.
electrons per cubic centimeter - e/cm3, e/cc, e cm-3
electron unit - e.u.
electron volt - eV
electrostatic unit - esu
entropy unit - eu
erg - spell out
*farad - F
femtofarad - fF
femtometer - fm
fermi - F
fissions per minute - fpm
foot - ft
foot-candle - fc
foot-lambert - fL
foot-pound - ft lb
formula units - f.u.
franklin - Fr
gal - Gal (unit of gravitational force
centistoke - cS
gallon - gal
gauss - G
gibbs - spell out
gigacycles per second - Gc/s
giga-electron-volt - GeV
gigahertz - GHz
gigavolt - GV
gilbert - Gi
gram - g
hartree - spell out
hectogram - hg
*henry - H
*hertz - Hz
horsepower - hp
hour - h
inch - in.
*joule - J
kayser - K
*kelvin - K
kilobar - kbar
kilobyte - kbyte
kilocalorie - kcal
kilocycles per second - kc/s
kilodegrees Kelvin - kK
kilodyne - kdyn
kilo-electron-volt - keV
kilogauss - kG
*kilogram - kg
kilogram force - kgf
kilogram meter - kg m
kilohertz - kHz
kilohm - k[Omega]
kilojoule - kJ
kilomegacycles per second - kMc/s
kilometer - km
kilo-oersted - kOe
kiloparsec - kpc
kilosecond - ks,ksec
kiloton - kt
kilovolt - kV
kilovolt ampere - kV A
kilowatt - kW
kilowatt hour - kW h
knot - kn
lambert - L
langmuir - L
liter - l, L
Lorentz unit - LU
*lumen - lm
lumens per watt - lm/W
*lux - lx
Mach - M
maxwell - Mx
megahertz - MHz
megacycles per second - Mc/s
mega-electron-volt - MeV
megarad - Mrad
megavolt - MV
megawatt - MW
megohm - M[Omega]
meter - m
meter-kilogram-second ampere - mksa
meter-kilogram-second coulomb - mksc
meter of water equivalent - mwe, m (w.e.)
mho - ohm-1
microampere - µA
microampere hour - µA h
microcoulomb - µC
microfarad - µF
microhm - µ[Omega]
micrometer - µm
micromole - µmol
microm - µm
microns of mercury - µm Hg
microsecond - µs, µsec
microunit - µu
mil - spell out
mile - spell out
milliampere - mA
millibarn - mb
millicurie - mCi
millidegrees - Kelvin mK
milligram - mg
millihenry - mH
milliliter - ml
millimeter - mm
millimeters of mercury - mm Hg
millimicron - mµm
million electron volt - MeV
million volt - MV
milliunit - mu
millivolt - mV
minute - (i) min, (ii)'
molal (concentration) - m
molar (concentration) - M
*mole - mol or spell out
mole percent - mol %, mole %
mole percent metal - MPM
month - spell out
nanobarn - nb
nanometer - nm
nanosecond - ns, nsec
nanoseconds per meter - ns/m
neper - Np
neutrons per fission - n/[florin]
neutrons per second - n/s
neutrons per seond per square cm - n/s cm2
*newton - N
normal (concentration) - N
oersted - Oe
*ohm - [Omega]
ohm centimeter - [Omega] cm
ohm centimeter per centimeter per cubic centimeter - [Omega] cm/(cm/cm3)
ounce - oz
parsec - pc
parts per billion - ppb
parts per million - ppm
*pascal - Pa
picofarad - pF
poise - P
pound - lb
pound-force per square inch - lb/in.2
pounds per square inch - psi
pounds per square inch absoloute - psi (absolute)
pounds per square inch gauge - psi (gauge)
rad - spell out
*radian - rad
radiation length - r.I.
reciprocal ohm - mho
revolutions per minute - rpm
revolutions per second - rev/s, rps
roentgen - R
rydberg - Ry
*second - (i) s, sec (ii)"
shake - spell out
*siemens - S
standard cubic centimeter per second - sccm
statampere - spell out
statohm - spell out
statvolt - spell out
*steradian - sr
stoke - S
tera-electron-volt - TeV
tetrahertz - Thz
*tesla - T
ton - spell out
torr - Torr, torr
townsend - Td
unified atomic mass unit - u
*volt - V
volume percent - vol %
*watt - W
*weber - Wb
webers per square meter - Wb/m2
week - spell out
weight percent - wt%
Weisskopf unit - W.u.
year - yr