kVA to Amps Calculator
Convert kva to current (amps) for single- or three-phase supply.
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What this tool does
Convert kva to current (amps) for single- or three-phase supply. Three-phase uses line-to-line voltage and assumes a balanced load. Single phase uses the two-wire supply voltage.
How to use the kVA to Amps Calculator
- Enter or select kva.
- Enter or select voltage.
- Enter or select supply.
- Read the calculated result; change any measurement to compare alternatives.
Formula
amps = kVA×1000/(phase factor×voltage)
- amount
- kVA
- voltage
- Voltage
- phase
- Supply
Three-phase uses line-to-line voltage and assumes a balanced load. Single phase uses the two-wire supply voltage.
Worked example
For kva to amps calculator, the following measurements illustrate the exact method: kVA: 10; Voltage: 240; Supply: 1.
Inputs
- kVA10
- Voltage240
- SupplySingle phase
Result
- Current (amps)41.67
Results explained
- Current (amps)
- Current (amps) from the formula above. Three-phase uses line-to-line voltage and assumes a balanced load. Single phase uses the two-wire supply voltage.
Frequently asked questions
amps = kVA×1000/(phase factor×voltage)
Three-phase uses line-to-line voltage and assumes a balanced load. Single phase uses the two-wire supply voltage.
No. Electrical and HVAC results are estimates. Installation must comply with local codes and be checked by a qualified licensed professional.
Nameplate values, conductor temperature, power factor, efficiency, weather and actual installation conditions may differ from your entered assumptions.
Confirm units, manufacturer data and the formula's assumptions, then verify sizing with the equipment instructions and applicable local standards.