Home » Canadian Metric Association » SI-Derived Units

Physical Quantity | Name | Symbol | Expressed in SI Base Units |

frequency | hertz | Hz | s^{-1} |

force | newton | N | m kg s^{-2} |

pressure, stress | pascal | Pa | N m^{-2} = m^{-1} kg s^{-2} |

energy, work, heat | joule | J | N m = m^{2} kg s^{-2} |

power, radiant flux | watt | W | J s-1 = m^{2} kg s^{-3} |

electrical charge | coulomb | C | A s |

electrical potential, electromotive force | volt | V | J C-1 = m^{2} kg s^{-3} A^{-1} |

electrical resistance | ohm | Ω | V A^{-1} = m^{2} kg s^{-3} A^{-2} |

electric conductance | siemens | S | ohm^{-1} = m^{-2} kg^{-1} s^{3} A^{2} |

electical capacitance | farad | F | C V^{-1} = m^{-2} kg^{-1} s^{4} A^{2} |

magnetic flux density | tesla | T | V s m^{-2} = kg s^{-2} A^{-1} |

magnetic flux | weber | Wb | V s = m^{2} kg s^{-2} A^{-1} |

inductance | henry | H | V A^{-1} s = m^{2} kg s^{-2} A^{-2} |

luminous flux | lumen | lm | cd sr |

illuminance | lux | lx | cd sr m^{-2} |

radioactive activity | becquerel | bq | s^{-1} |

absorbed dose of radiation | gray | Gy | J kg^{-1} = m^{2} s^{-2} |

dose equivalent of radiation | sievert | Sv | J kg^{-1} = m^{2} s^{-2} |

plane angle | radian | rad | 1 m m^{-1} |

solid angle | steradian | sr | 1 m^{2} m^{-2} |

area | square metre | *A* | m^{2} |

volume | cubic metre | *V* | m^{3} |

speed, velocity | metre per second | *v* | m/s |

acceleration | metre per second squared | *a* | m/s^{2} |

wavenumber | reciprocal metre | σ | m^{–1} |

density, mass density | kilogram per cubic metre | ρ | kg/m^{3} |

surface density | kilogram per square metre | ρ_{A} | kg/m^{2} |

specific volume | cubic metre per kilogram | *v* | m^{3}/kg |

current density | ampere per square metre | *j* | A/m^{2} |

magnetic field strength | ampere per metre | *H* | A/m |

concentration | mole per cubic metre | *c* | mol/m^{3} |

mass concentration | kilogram per cubic metre | ρ, γ | kg/m^{3} |

luminance | candela per square metre | *L*_{v} | cd/m^{2} |

refractive index | one | *n* | 1 |

relative permeability | one | µ_{r} | 1 |