Ohm’s Law
Ohm’s Law
Solve voltage, current, resistance, or power from any two.
All electrical math stays on this device.
Voltage
V
Current
A
Resistance
Ω
Power
W
Enter any two of V, I, R, or P and the rest are derived from Ohm’s law (V = I·R, P = I²R = V²/R). Fill in more and they’re checked against each other.