|
Unit |
Symbol |
Physical Quantity |
| Base units | ||
|
ampere |
A |
electric current |
|
candela |
cd |
luminous intensity |
|
kelvin |
K |
thermodynamic temperature |
|
kilogram |
kg |
mass |
|
meter |
m |
length |
|
mole |
mol |
amount of substance |
|
second |
s |
time |
| Supplementary units | ||
|
radian |
rad |
plane angle |
|
steradian |
sr |
solid angle |
From The ACS Style Guide (J. S. Dodd, editor, 1986)
|
Factor |
Prefix |
Symbol |
|
10–18 |
atto |
a |
|
10–15 |
femto |
f |
|
10–12 |
pico |
p |
|
10–9 |
nano |
n |
|
10–6 |
micro |
μ |
|
10–3 |
milli |
m |
|
10–2 |
centi |
c |
|
10–1 |
deci |
d |
|
101 |
deka |
da |
|
102 |
hecto |
h |
|
103 |
kilo |
k |
|
106 |
mega |
M |
|
109 |
giga |
G |
|
1012 |
tera |
T |
|
1015 |
peta |
P |
|
1018 |
exa |
E |
From The ACS Style Guide (J. S. Dodd, editor, 1986)
| Unit | Symbol | Quantity | Equivalent Common Usage | SI Base Unit Derivation |
|
becquerel |
Bq |
activity (of a radionuclide) |
|
s–1 |
|
coulomb |
C |
quantity of electricity, electric charge |
|
A·s, s·A |
|
farad |
F |
capacitance |
C/V |
m–2·kg–1·s4·A2 |
|
gray |
Gy |
absorbed dose, kerma, specific energy imparted |
J/kg |
m2/s2 |
|
henry |
H |
inductance |
Wb/A |
m2·kg·s–2·A–2 |
|
hertz |
Hz |
frequency |
|
s–1 |
|
joule |
J |
energy, work, quantity of heat |
N·m |
m2·kg·s–2 |
|
lumen |
lm |
luminous flux |
lm |
cd·sr |
|
lux |
lx |
illuminance |
lm/m2 |
m–2·cd·sr |
|
newton |
N |
force |
|
m·kg·s–2 |
|
ohm |
Ω |
electrical resistance |
V/A |
m2·kg·s–3·A–2 |
|
pascal |
Pa |
pressure, stress |
N/m2 |
m–1·kg·s–2 |
|
siemens |
S |
conductance |
A/V |
m–2·kg–1·s3·A2 |
|
sievert |
Sv |
dose equivalent |
J/kg |
m2/s2 |
|
tesla |
T |
magnetic flux density |
Wb/m2 |
kg·s–2·A–1 |
|
volt |
V |
electric potential, potential difference, electromotive force |
W/A |
m2·kg·s–3·A–1 |
|
watt |
W |
power, radiant flux |
J/s |
m2·kg·s–3 |
| weber | Wb | magnetic flux | V·s | m2·kg·s–2·A–1 |
From The ACS Style Guide (J. S. Dodd, editor, 1986)
Unit |
Symbol |
Quantity |
In Terms of Other Units |
ampere per meter |
A/m |
magnetic field strength |
|
ampere per square meter |
A/m2 |
current density |
|
candela per square meter |
cd/m2 |
luminance |
|
coulomb per cubic meter |
C/m3 |
electric charge density |
m–3·s·A |
coulomb per kilogram |
C/kg |
exposure (X-ray, gamma ray) |
|
coulomb per square meter |
C/m2 |
electric flux density |
m–2·s·A |
cubic meter |
m3 |
volume |
|
cubic meter per kilogram |
m3/kg |
specific volume |
|
farad per meter |
F/m |
permittivity |
m–3·kg–1·s4·A2 |
henry per meter |
H/m |
permeability |
m·kg·s–2·A–2 |
joule per cubic meter |
J/m3 |
energy density |
m–1·kg·s–2 |
joule per kelvin |
J/K |
heat capacity, entropy |
m2·kg·s–2·K–1 |
joule per kilogram |
J/kg |
specific energy |
m2/s2 |
joule per kilogram kelvin |
J/(kg·K) |
specific heat capacity, specific entropy |
m2·s–2·K–1 |
joule per mole |
J/mol |
molar energy |
m2·kg·s–2·mol–1 |
joule per mole kelvin |
J/(mol·K) |
molar entropy, molar heat capacity |
m2·kg·s–2·K–1·mol–1 |
kilogram per cubic meter |
kg/m3 |
density, mass density |
|
meter per second |
m/s |
speed, velocity |
|
meter per square second |
m/s2 |
acceleration |
|
mole per cubic meter |
mol/m3 |
concentration (amount of substance per unit volume) |
|
newton meter |
N·m |
moment of force |
m2·kg·s–2 |
newton per meter |
N/m |
surface tension |
kg/s2 |
pascal second |
Pa·s |
dynamic viscosity |
m–1·kg·s–1 |
radian per second |
rad/s |
angular velocity |
|
radian per square second |
rad/s2 |
angular acceleration |
|
reciprocal meter |
m–1 |
wavenumber |
|
reciprocal second |
s–1 |
frequency |
|
square meter |
m2 |
area |
|
square meter per second |
m2/s |
kinematic viscosity |
|
volt per meter |
V/m |
electric field strength |
m·kg·s–3·A–1 |
watt per meter kelvin |
W/(m·K) |
thermal conductivity |
m·kg·s–3·K–1 |
watt per square meter |
W/m2 |
heat flux density, irradiance |
kg/s3 |
watt per square meter steradian |
W/(m2·sr) |
radiance |
|
watt per steradian |
W/sr |
radiant intensity |
From The ACS Style Guide (J. S. Dodd, editor, 1986)
last edited 07/29/03