Ohm's Law Calculator

Calculate Voltage, Current, Resistance or Power. Enter any two values.

Voltageā€”
Currentā€”
Resistanceā€”
Powerā€”

Formulas

V = I Ɨ R  |  I = V / R  |  R = V / I

P = V Ɨ I  |  P = IĀ² Ɨ R  |  P = VĀ² / R

Who is this for?

Useful for marine electricians and engineers working on ship electrical systems.