| |
|
|
|
|
| SI Derived Units With Special Names |
| Quantity |
Name |
Symbol |
Expression in
terms of other SI
units |
Expression in
terms of SI
base units |
| |
|
|
|
|
| Plane angle |
radian |
rad |
|
1 |
| |
|
|
|
|
| Solid angle |
steradian |
sr |
|
1 |
| |
|
|
|
|
| Frequency |
hertz |
Hz |
|
s-1 |
| |
|
|
|
|
| Force |
newton |
N |
|
kg m s-2 |
| |
|
|
|
|
| Pressure, Stress |
pascal |
Pa |
N/m2 |
kg m-1 s-2 |
| |
|
|
|
|
| Energy, Work, Quantity of Heat |
joule |
J |
N m |
kg m2 s-2 |
| |
|
|
|
|
| Power, Radiant Flux |
watt |
W |
J/s |
kg m2 s-3 |
| |
|
|
|
|
| Electric Charge, Quantity of Electricity |
coulomb |
C |
|
s A |
| |
|
|
|
|
| Electric Potential, Potential Difference, Electromotive Force |
volt |
V |
W/A |
kg m2 s-3 A-1 |
| |
|
|
|
|
| Capacitance |
farad |
F |
C/V |
kg-1 m-2 s4 A2 |
| |
|
|
|
|
| Electric Resistance |
ohm |
Ω |
V/A |
kg m2 s-2 A-1 |
| |
|
|
|
|
| Electric Conductance |
siemens |
S |
A/V |
kg-1 m-2 s3 A2 |
| |
|
|
|
|
| Magnetic Flux |
weber |
Wb |
V s |
kg m2 s-2 A-1 |
| |
|
|
|
|
| Magnetic Flux Density |
tesla |
T |
Wb/m2 |
kg s-2 A-1 |
| |
|
|
|
|
| Inductance |
henry |
H |
Wb/A |
kg M2 s-2A-2 |
| |
|
|
|
|
| Celsius Temperature |
degree celsius |
°C |
|
K |
| |
|
|
|
|
| Luminous Flux |
lumen |
lm |
|
cd sr |
| |
|
|
|
|
| Illuminance |
lux |
lx |
lm/m2 |
m-2 cd sr |
| |
|
|
|
|
| Activity of a Radionuclide |
bequerel |
Bq |
|
s-1 |
| |
|
|
|
|
| Absorbed Dose, Specific Energy Imparted, Kerma, Absorbed Dose Index |
gray |
Gy |
J/kg |
m2 s-2 |
| |
|
|
|
|
| Dose Equivalent, Dose Equivalent Index |
sievert |
Sv |
J/kg |
m2 s-2 |
| |
|
|
|
|
| equivalent, personal dose equivalent, organ equivalent dose |
|
|
|
|
| |
|
|
|
|
| SI Derived Units Expressed by Means of Special Names |
| Quantity |
Name |
Symbol |
Expression in terms of SI base units |
| |
|
|
|
| Dynamic Viscosity |
pascal second |
Pa s |
kg m-1 s-1 |
| |
|
|
|
| Moment of Force |
newton meter |
N m |
kg M2 s-2 |
| |
|
|
|
| Surface Tension |
newton per metre |
N/m |
s-2 |
| |
|
|
|
| Heat Flux Density / Irradiance |
watt per square metre |
W/m2 |
s-3 |
| |
|
|
|
| Heat Capacity / Entropy |
joule per kelvin |
J/K |
kg m 2 s-2 K-1 |
| |
|
|
|
| Specific Heat Capacity / Specific Entropy |
joule per kilogram kelvin |
J/(kg K) |
m2 s-2 K-1 |
| |
|
|
|
| Specific Energy |
joule per kilogram |
J/kg |
m 2 s-2 |
| |
|
|
|
| Thermal Conductivity |
watt per metre kelvin |
W/(m K) |
kg m s-3 K-1 |
| |
|
|
|
| Energy Density |
joule per cubic metre |
J/m3 |
kg m-1 s-2 |
| |
|
|
|
| Electric Field Strength |
volt per metre |
V/m |
kg m s-3 A-1 |
| |
|
|
|
| Electric Charge Density |
coulomb per cubic metre |
C/m3 |
m-3 s A |
| |
|
|
|
| Electric Flux Density |
coulomb per square metre |
C/m2 |
m-2 s A |
| |
|
|
|
| Permittivity |
farad per metre |
F/m |
kg-1 m-3 s4 A2 |
| |
|
|
|
| Permeability |
henry per metre |
H/m |
kg m s-2 A-2 |
| |
|
|
|
| Molar Energy |
joule per mole |
J/mol |
kg m2 s-2 mol-1 |
| |
|
|
|
| Molar Entropy / Molar Heat Capacity |
joule per mole kelvin |
J/(mol K) |
kg m2 s-2 K-1 mol-1 |
| |
|
|
|
| Exposure (x and γ rays) |
coulomb per kilogram |
C/kg |
kg-1 s A |
| |
|
|
|
| Absorbed Dose Rate |
gray per second |
Gy/s |
M2 s-3 |
| |
|
|
|
| Radiant intensity |
watt per steradian |
W sr-1 |
m2 kg s-3 |
| |
|
|
|
| Radiance |
watt per square metre steradian |
W m-2 sr-1 |
kg s-3 |
| |
|
|
|
|
| SI Supplementary Units |
| Quantity |
Name |
Symbol |
Expression in terms of SI base units |
| |
|
|
|
| Plane Angle |
radian |
rad |
m m-1 = 1 |
| |
|
|
|
| Solid Angle |
steradian |
sr |
m2 m-2 = 1 |
| |
|
|
|
| SI Derived Units Formed Using Supplementary Units |
|
