Ohm's Law Calculator

Calculate voltage, current, or resistance using Ohm's Law formula.

Ohm's Law Calculation

Enter two values to calculate the third using Ohm's Law.

Formula Used:

Ohm's Law states:

V = I × R

If any one of the values is missing, you can calculate it using the formula:

  • Voltage (V) = Current (I) × Resistance (R)
  • Current (I) = Voltage (V) ÷ Resistance (R)
  • Resistance (R) = Voltage (V) ÷ Current (I)