Ohm's Law Calculator
Calculate voltage, current, resistance, or power using Ohm's Law. Enter any two known values and the calculator solves for the third and fourth.
Solve for
Known Values (enter any two)
24 W
Power
24 W
Formula used: P = V × I
Formula Reference
Voltage
V = I × R = P / I = √(P × R)Current
I = V / R = P / V = √(P / R)Resistance
R = V / I = V² / P = P / I²Power
P = V × I = I² × R = V² / R