Electrical

Electrical Power Calculator

Calculate electrical power using P = V × I, P = I² × R or P = V² / R.

Inputs

Solve For

Voltage[V]optional

Current[A]optional

Resistance[Ω]optional

Power[W]optional

Result

Enter values above to calculate

These calculators provide estimates and educational results. Always verify critical engineering calculations against applicable standards and qualified professional review.

Formula

P = V × I

Electrical power is the rate at which electrical energy is transferred.

Variables

Symbol	Variable	Unit	Description
P	Power	W	Electrical power
V	Voltage	V	Electric potential difference
I	Current	A	Electric current

Related Calculators

Ohm's Law Calculator Voltage Drop Calculator