< Ohm's Law Calculator />

Calculate voltage, current, resistance, and power using Ohm's Law. This interactive tool provides visual feedback and detailed explanations of the calculations.

Ohm's Law Calculator

OHM'S LAW DIAGRAM
VIRPV = I × RI = V ÷ RP = V × I

INSTRUCTIONS

Select the value to calculate, then enter values for exactly 2 of the other parameters.

• Examples:

  • Voltage: 5 (5V)
  • Current: 5 (5A), 5m or 5mA (5mA), 10u (10µA)
  • Resistance: 5 (5Ω), 1k (1kΩ), 2M (2MΩ)
  • Power: 5 (5W), 10m (10mW)

• Suffixes k, M, G, m, u/µ are supported.

Enter 2 more value(s).

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