Ohm's Law Calculator

Calculate Voltage, Current, Resistance, or Power. Enter any two values.

Ohm's Law Calculator: V, I, R, P

Calculate Voltage (V), Current (I), Resistance (R), and Power (P) using Ohm's Law formulas. A must-have tool for electronics and electrical engineering.

The Foundation of Electronics

Ohm’s Law represents the relationship between voltage, current, and resistance in an electrical circuit. This relationship is often summarized by the formula V = I × R.

How It Works

  • Voltage (V): The electrical potential difference, measured in Volts.
  • Current (I): The flow of electric charge, measured in Amps.
  • Resistance (R): The opposition to current flow, measured in Ohms (Ω).
  • Power (P): The rate of energy consumption, measured in Watts (W).

Frequently Asked Questions