SI Units
QUANTITY | NAME | SYMBOL | ||
Amount of Substance | mole | mol | ||
Electric Current | ampere | A | ||
Length | meter | m | ||
Luminous Intensity | candela | cd | ||
Mass | kilogram | kg | ||
Thermodynamic Temperature | kelvin | K | ||
Time | second | s |
QUANTITY | NAME | SYMBOL | EQUIVALENT UNITS | |
Absorbed Dose / Specific Energy Imparted / Kerma / | gray | Gy | J/kg m2 s-2 |
|
Absorbed Dose Rate | gray per second | Gy/s | M2 s-3 | |
Acceleration | metre per second squared | m/s2 | ||
Activity of a Radionuclide | bequerel | Bq | s-1 | |
Area | square meter | m2 | ||
Capacitance | farad | F | C/V m-2 kg-1 s4 A2 |
|
Celsius Temperature | degree celsius | °C | K | |
Concentration | mole per cubic metre | mol/m3 | ||
Current Density | ampere per square metre | A/m2 | ||
Density / Mass Density | kilogram per cubic metre | kg/m3 |
QUANTITY | NAME | SYMBOL | EQUIVALENT UNITS | |
Dose Equivalent / Dose Equivalent Index | sievert | Sv | J/kg m2 s-2 |
|
Dynamic Viscosity | pascal second | Pa s | m-1 kg s-1 | |
Electric Charge / Quantity of Electricity | coulomb | C | s A | |
Electric Charge Density | coulomb per cubic metre | C/m3 | m-3 s A | |
Electric Conductance | siemens | S | A/V m-2 kg-1 s3 A2 |
|
Electric Field Strength | volt per metre | V/m | m kg s-3 A-1 | |
Electric Flux Density | coulomb per square metre | C/m2 | m-2 s A | |
Electric Potential / Potential Difference / Electr | volt | V | W/A m2 kg s-3 A-1 |
|
Electric Resistance | ohm | Ω | V/A | |
Energy / Work / Quantity of Heat | joule | J | N m m2 kg s-2 |
QUANTITY | NAME | SYMBOL | EQUIVALENT UNITS | |
Energy Density | joule per cubic metre | J/m3 | m-1 kg s-2 | |
Exposure (x and Ω rays) | coulomb per kilogram | C/kg | kg-1 s A | |
Force | newton | N | m kg s-2 | |
Frequency | hertz | Hz | s-1 | |
Heat Capacity / Entropy | joule per kelvin | J/K | M2 kg s-2 K-1 | |
Heat Flux Density / Irradiance | watt per square metre | W/m2 | kg s-3 | |
Illuminance | lux | lx | lm/m2 m-2 cd sr |
|
Inductance | henry | H | Wb/A M2 kg s-2 A-2 |
|
Luminance | candela per square metre | cd/m2 | ||
Luminous Flux | lumen | lm | cd sr |
QUANTITY | NAME | SYMBOL | EQUIVALENT UNITS | |
Magnetic Field Strength | ampere per metre | A/m | ||
Magnetic Flux | weber | Wb | V s m2 kg s-2 A-1 |
|
Magnetic Flux Density | tesla | T | Wb/m2 kg s-2 A-1 |
|
Molar Energy | joule per mole | J/mol | m2 kg s-2 mol-1 | |
Molar Entropy / Molar Heat Capacity | joule per mole kelvin | J/(mol K) | m2 kg s-2 K-1 mol-1 | |
Moment of Force | newton meter | N m | M2 kg s-2 | |
Permeability | henry per metre | H/m | m kg s-2 A-2 | |
Permittivity | farad per metre | F/m | m-3 kg-1 s4 A2 | |
Power / Radiant Flux | watt | W | J/s m2 kg s-3 |
|
Pressure / Stress | pascal | Pa | N/m2 m-1 kg s-2 |
QUANTITY | NAME | SYMBOL | EQUIVALENT UNITS | |
Specific Energy | joule per kilogram | J/kg | M2 s-2 | |
Specific Heat Capacity / Specific Entropy | joule per kilogram kelvin | J/(kg K) | m2 s-2 K-1 | |
Specific Volume | cubic metre per kilogram | m3/kg | ||
Speed / Velocity | metre per second | m/s | ||
Surface Tension | newton per metre | N/m | kg s-2 | |
Thermal Conductivity | watt per metre kelvin | W/(m K) | m kg s-3 K-1 | |
Volume | cubic meter | m3 | ||
Wave Number | reciprocal metre | m-1 |
QUANTITY | NAME | SYMBOL | EQUIVALENT UNITS | |
Angular Acceleration | radian per second squared | rad/s2 | ||
Angular Velocity | radian per second | rad/s | ||
Plane Angle | radian | rad | m m-1 = 1 | |
Radiance | watt per square metre steradian | W/(m2 sr) | ||
Radiant Intensity | watt per steradian | W/sr | ||
Solid Angle | steradian | sr | m2 m-2 = 1 |