Ohm's Law Calculator
Ohm's law relates voltage, current and resistance in a resistive circuit. Leave exactly one field blank to solve for it.
V = I × R
- V = voltage (V)
- I = current (A)
- R = resistance (Ω)
Result
Enter values and press Calculate.
V = I × R
For educational and general reference only. Results depend on the accuracy of the values entered and are rounded to the selected precision. Verify critical designs with a qualified engineer and applicable codes. Full disclaimer