SI Units

The meter (m) is the base unit of length in the International System of Units (SI).

The kilogram (kg) is the base unit of mass in the SI system.

The second (s) is the base unit of time in the SI system.

The ampere (A) is the base unit of electric current in the SI system.

The kelvin (K) is the base unit of thermodynamic temperature in the SI system.

The candela (cd) is the base unit of luminous intensity in the SI system.

The mole (mol) is the base unit of amount of substance in the SI system.

The hertz (Hz) is the derived unit of frequency in the SI system.

The newton (N) is the derived unit of force in the SI system.

The pascal (Pa) is the derived unit of pressure in the SI system.

The joule (J) is the derived unit of energy in the SI system.

The watt (W) is the derived unit of power in the SI system.

The coulomb (C) is the derived unit of electric charge in the SI system.

The ohm (Ω) is the derived unit of electrical resistance in the SI system.

The volt (V) is the derived unit of electric potential (voltage) in the SI system.

The farad (F) is the derived unit of capacitance in the SI system.

The henry (H) is the derived unit of inductance in the SI system.

The weber (Wb) is the derived unit of magnetic flux in the SI system.

The tesla (T) is the derived unit of magnetic field strength in the SI system.

The becquerel (Bq) is the derived unit of radioactivity in the SI system.

The joule (J) is the derived unit of work in the SI system.

The radian (rad) is the derived unit of plane angle in the SI system.

The steradian (sr) is the derived unit of solid angle in the SI system.

The joule (J) is the derived unit of energy, including pressure energy, in the SI system.

Momentum is measured in kilogram meters per second (kg·m/s) in the SI system.

Torque is measured in newton-meters (N·m) in the SI system.

Heat is measured in joules (J) in the SI system.

Density is measured in kilograms per cubic meter (kg/m³) in the SI system.

Velocity is measured in meters per second (m/s) in the SI system.

Acceleration is measured in meters per second squared (m/s²) in the SI system.

Surface tension is measured in newtons per meter (N/m) in the SI system.

Viscosity is measured in pascal-seconds (Pa·s) in the SI system.

Gravitational field strength is measured in newtons per kilogram (N/kg) in the SI system.

Refractive index is a dimensionless quantity and has no SI unit.

Wave number is measured in reciprocal meters (m⁻¹) in the SI system.

Electric potential is measured in volts (V) in the SI system.

Conductance is measured in siemens (S) in the SI system.

Magnetic permeability is measured in henries per meter (H/m) in the SI system.

Inductive reactance is measured in ohms (Ω) in the SI system.

Electric field strength is measured in volts per meter (V/m) in the SI system.

Entropy is measured in joules per kelvin (J/K) in the SI system.

Specific heat capacity is measured in joules per kilogram per kelvin (J/kg·K) in the SI system.

Latent heat is measured in joules per kilogram (J/kg) in the SI system.

Strain is a dimensionless quantity and has no SI unit.

Stress is measured in pascals (Pa) in the SI system.

Thermal conductivity is measured in watts per meter per kelvin (W/m·K) in the SI system.

Luminous flux is measured in lumens (lm) in the SI system.

Illumination is measured in lux (lx) in the SI system.

Absorbed radiation dose is measured in grays (Gy) in the SI system.

Dose equivalent is measured in sieverts (Sv) in the SI system.