Single Phase kVA Calculator
Calculate single-phase apparent power from voltage and current (kVA = V × I ÷ 1000).
Formula
kVA = (V × I) ÷ 1000
- kVA
- Apparent power, in kilovolt-amps
- V
- Voltage, in volts
- I
- Current, in amps
What this calculator does
Calculates the apparent power (kVA) supplied to a single-phase load from voltage and current.
Use cases
- Size a single-phase transformer for a measured voltage and current
- Estimate generator loading in kVA for a single-phase circuit
- Check a panel's apparent power demand against its rated capacity