Ohm's Law Calculator

Calculate voltage, current, resistance, and power using Ohm's Law.

ohm's law

electronics

engineering

circuit

engineering tools

voltage

current

resistance

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Ohm's Law Calculator

Calculate voltage, current, resistance, and power.

Value to Calculate

Enter any two values to calculate the others.

Current (A)

Resistance (Ω)

Power (W)

Formula & Explanation

This calculator applies Ohm's Law to determine voltage, current, resistance, or power in an electrical circuit, ideal for students, engineers, and hobbyists.