Ohm's Law Calculator - V, I, R Online Tool

Ohm's Law Calculator

Calculate Voltage, Current, or Resistance based on the other two values.

Calculate for:

Voltage (V)

Current (I)

Resistance (R)

current (Amps (A))

resistance (Ohms (Ω))

Based on Ohm's Law: Voltage (V) = Current (I) × Resistance (R)

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