Free calculator · Electrical basics
kVA to Amps Calculator
Convert apparent power to current for single-phase or balanced three-phase AC systems.
Interactive calculator · explicit assumptions
kVA to Amps Calculator
Calculations run in your browser. Sharing puts numeric assumptions in the link. No registration required.
Formula
Three-phase: A = kVA × 1,000 ÷ (√3 × VLL). Single-phase: A = kVA × 1,000 ÷ V.
Worked example
1,000 kVA at 480 V three-phase is approximately 1,202.8 A.
What this calculation does not cover
Use line-to-line voltage for three-phase results. This current conversion does not select a breaker, cable or protective-device rating.
Sources & further reading
Using the result responsibly
Keep a record of the input units and operating assumptions. A change in one input can make two apparently similar equipment options impossible to compare. Export the scenario before reviewing it with your engineer or equipment manufacturer.
Educational planning only. These tools do not replace a licensed professional’s design, a manufacturer selection study or applicable local requirements.