SI derived unit
SI derived units are part of the SI system of measurement units and are derived from the seven SI base units.
| Physical quantity | Name of SI unit | Symbol for SI unit | Expression in terms of [[SI base unit|SI base units]] | |
|---|---|---|---|---|
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| frequency | hertz | Hz | ||
| force | newton | N | ||
| pressure, stress | pascal | Pa | ||
| energy, work, heat | joule | J | ||
| power, radiant flux | watt | W | ||
| electric charge | coulomb | C | ||
| electric potential, electromotive force | volt | V | ||
| electrical resistance | ohm | Ω | ||
| electric conductance | siemens | S | ||
| electric capacitance | farad | F | ||
| magnetic flux density, magnetic inductivity | tesla | T | ||
| magnetic flux | weber | Wb | ||
| inductance | henry | H | ||
| 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 | |
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| 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 | ||
References:
- I. Mills, Tomislav Cvitas, Klaus Homann, Nikola Kallay, IUPAC: Quantities, Units and Symbols in Physical Chemistry, 2nd edition (June 1993), Blackwell Science Inc (p. 72)
