| Physical quantity |
Name of SI unit |
Symbol for SI unit |
Expression in terms of SI base
units |
|
Special names and Symbols
|
| frequency |
hertz |
Hz |
<math>\mbox{s}^{-1}</math> |
|
| force |
newton |
N |
<math>\mbox{kg} \cdot \mbox{m} \cdot \mbox{s}^{-2}</math> |
|
| pressure, stress |
pascal |
Pa |
<math>\mbox{N} \cdot \mbox{m}^{-2}</math> |
<math>= \mbox{kg} \cdot \mbox{m}^{-1} \cdot \mbox{s}^{-2}</math> |
| energy, work, heat |
joule |
J |
<math>\mbox{N} \cdot \mbox{m}</math> |
<math>= \mbox{kg} \cdot \mbox{m}^2 \cdot \mbox{s}^{-2}</math> |
| power, radiant flux[?] |
watt |
W |
<math>\mbox{J} \cdot \mbox{s}^{-1}</math> |
<math>= \mbox{kg} \cdot \mbox{m}^2 \cdot \mbox{s}^{-3}</math> |
| electric charge |
coulomb |
C |
<math>\mbox{A} \cdot \mbox{s}</math> |
|
| electric potential, electromotive force |
volt |
V |
<math>\mbox{J} \cdot \mbox{C}^{-1}</math> |
<math>= \mbox{m}^2 \cdot \mbox{kg} \cdot \mbox{s}^{-3} \cdot \mbox{A}^{-1}</math> |
| electrical resistance |
ohm |
Ω |
<math>\mbox{V} \cdot \mbox{A}^{-1}</math> |
<math>= \mbox{m}^2 \cdot \mbox{kg} \cdot \mbox{s}^{-3} \cdot \mbox{A}^{-2}</math> |
| electric conductance |
siemens |
S |
<math>\mbox{A} \cdot \mbox{V}^{-1}</math> |
<math>= \mbox{s}^3 \cdot \mbox{A}^2 \cdot \mbox{m}^{-2} \cdot \mbox{kg}^{-1}</math> |
| electric capacitance |
farad |
F |
<math>\mbox{C} \mbox{V}^{-1}</math> |
<math>= \mbox{s}^4 \cdot \mbox{A}^2 \cdot \mbox{m}^{-2} \cdot \mbox{kg}^{-1}</math> |
| magnetic flux density, magnetic inductivity[?] |
tesla |
T |
<math>\mbox{V} \cdot \mbox{s} \cdot \mbox{m}^{-2}</math> |
<math>= \mbox{kg} \cdot \mbox{s}^{-2} \cdot \mbox{A}^{-1}</math> |
| magnetic flux |
weber |
Wb |
<math>\mbox{V}\cdot\mbox{s}</math> |
<math>= \mbox{m}^2 \cdot \mbox{kg} \cdot \mbox{s}^{-2} \cdot \mbox{A}^{-1}</math> |
| inductance |
henry |
H |
<math>\mbox{V} \mbox{s} \cdot \mbox{A}^{-1}</math> |
<math>= \mbox{m}^2 \cdot \mbox{kg} \cdot \mbox{s}^{-2} \cdot \mbox{A}^{-2}</math> |
| temperature |
degree Celsius |
°C |
K |
|
| plane angle |
radian |
rad |
1 |
= m·m-1 |
| solid angle |
steradian |
sr |
1 |
= m2·m-2 |
| luminous flux[?] |
lumen |
lm |
cd·sr |
|
| illuminance[?] |
lux |
lx |
cd·sr·m-2 |
|
| activity (radioactive) |
becquerel |
Bq |
s-1 |
|
| absorbed dose (of radiation) |
gray |
Gy |
J·kg-1 |
= m2·s-2 |
| dose equivalent (dose equivalent index) |
sievert |
Sv |
J·kg-1 |
= m2·s-2 |
| catalytic activity |
katal |
kat |
mol·s-1 |
|
|
Other Quantities
|
| area |
|
|
m2 |
|
| volume |
|
|
m3 |
|
| speed, velocity |
|
|
m·s-1 |
|
| angular velocity |
|
|
s-1, rad·s-1 |
|
| acceleration |
|
|
m·s-2 |
|
| moment of force |
|
|
N·m |
= m2·kg·s-2 |
| wavenumber |
|
|
m-1 |
|
| density, mass density |
|
|
kg·m-3 |
|
| specific volume |
|
|
m3·kg-1 |
|
| amount (-of-substance) concentration |
|
|
mol·m-3 |
|
| molar volume |
|
|
m3·mol-1 |
|
| heat capacity, entropy |
|
|
J·K-1 |
=
m2·kg·s-2·K-1 |
| molar heat capacity, molar entropy |
|
|
J·K-1·mol-1 |
=
m2·kg·s-2·K-1·mol-1 |
| specific heat capacity, specific entropy |
|
|
J·K-1·kg-1 |
=
m2·s-2·K-1 |
| molar energy |
|
|
J·mol-1 |
=
m2·kg·s-2·mol-1 |
| specific energy |
|
|
J·kg-1 |
= m2·s-2 |
| energy density |
|
|
J·m-3 |
= m-1·kg·s-2 |
| surface tension |
|
|
N·m-1=J·m-2 |
= kg·s-2 |
| heat flux density, irradiance |
|
|
W·m-2 |
= kg·s-3 |
| thermal conductivity |
|
|
W·m-1·K-1 |
= m·kg·s-3·K-1 |
| kinematic viscosity, diffusion coefficient |
|
|
m2·s-1 |
|
| dynamic viscosity |
|
|
N·s·m-2 = Pa·s |
= m-1·kg·s-1 |
| electric charge density |
|
|
C·m-3 |
m-3·s·A |
| electric current density |
|
|
A·m-2 |
|
| conductivity |
|
|
S·m-1 |
=
m-3·kg-1·s3·A
2 |
| molar conductivity |
|
|
S·m2·mol-1 |
=
kg-1·mol-1·s3·A
2 |
| permittivity |
|
|
F·m-1 |
=
m-3·kg-1·s4·A
2; |
| permeability |
|
|
H·m-1 |
= m·kg·s-2·A-2 |
| electric field strength |
|
|
V·m-1 |
= m·kg·s-3·A-1 |
| magnetic field strength |
|
|
A·m-1 |
|
| luminance |
|
|
cd·m-2 |
|
| exposure (X and gamma rays) |
|
|
C·kg-1 |
= kg-1·s·A |
| absorbed dose rate |
|
|
Gy·s-1 |
= m2·s-3 |
