# Ohm's Law (Electrical Power)

`P = R * I^2`

Ohm's law calculator. Relationship between electrical Power, Resistance and Current.

Ohm's law calculator. Relationship between electrical Power, Resistance and Current.

**Enter 'x' in the field to be calculated.**This tool is a calculator of Ohm's law in its "power" version.

`P = R * I^2`

P: electric power in watt

R: resistance in ohm

I: electric current intensity in ampere

## See also

Ohm's law (voltage)

Convert power units

Convert electrical resistance units

Convert electric current units

Electricity calculators

Physics Calculators