SI Derived Units
Derived quantity | Name | Symbol | Other symbol | Base units |
plane angle | radian | rad | - | m·m-1 = 1 |
solid angle |
steradian | sr | - | m2·m-2=1 |
frequency | hertz | Hz | - | s-1 |
force | newton | N | - | m·kg·s-2 |
pressure, stress |
pascal | Pa | N/m2 | m-1·kg·s-2 |
energy, work, quantity of heat |
joule | J | Nm | m2·kg·s-2 |
power, radiant flux |
watt | W | J/s | m2·kg·s-3 |
electric charge, quantity of electricity |
coulomb | C | - | s·A |
electric potential, difference, electromotive force |
volt | V | W/A | m2·kg·s-3·A-1 |
capacitance | farad | F | C/V | m-2·kg-1·s4·A2 |
electric conductance |
siemens | S | A/V | m-2·kg-1·s3·A2 |
electric resistance | ohm | W | V/A | m2·kg·s-3·A-2 |
magnetic flux | weber | Wb | Vs | m2·kg·s-2·A-1 |
magnetic flux density | tesla | T | Wb/m2 | kg·s-2·A-1 |
inductance | henry | H | Wb/A | m2·kg·s-2·A-2 |
Celsius temperature | degree Celsius | °C | - | K |
luminous flux | lumen | lm | cd·sr | m2·m-2·cd = cd |
illuminance | lux | lx | lm/m2 | m2·m-4·cd = m-2·cd |
activity (of a radionuclide) | becquerel | Bq | - | s-1 |
absorbed dose, specific energy (imparted), kerma | gray | Gy | J/kg | m2·s-2 |
dose equivalent | sievert | Sv | J/kg | m2·s-2 |
catalytic activity | katal | kat | - | s-1mol |