Tools/Ohm's Law Calculator

Ohm's Law Calculator

Calculate voltage, current, resistance, and power

Enter any two values

V
Voltage
I
Current
R
Resistance
P
Power

Ohm's Law Formulas

V = I × R

Voltage

I = V / R

Current

R = V / I

Resistance

P = V × I

Power

P = I² × R

P = V² / R

R = V² / P

Need PCB Manufacturing?

Get instant quotes with free DFM review.

Get Free Quote