Home › Calculators › Electromagnetism › Ohm's Law Calculator
Ohm's Law Calculator
Work out voltage, current or resistance in a simple electric circuit from the direct link between the three quantities involved.
V = I × R
Voltage across a resistor equals the current through it multiplied by its resistance.
Voltage
… V
The calculation runs entirely in your browser, no data leaves your device. Change any number and the answer updates instantly.