Three Phase kVA Calculator
Calculate three-phase apparent power from line voltage and current (kVA = √3 × V × I ÷ 1000).
Formula
kVA = (√3 × V × I) ÷ 1000
- kVA
- Apparent power, in kilovolt-amps
- V
- Line-to-line voltage, in volts
- I
- Line current, in amps
What this calculator does
Calculates the apparent power (kVA) supplied to a balanced three-phase load from line voltage and current.
Use cases
- Size a three-phase transformer for a measured line voltage and current
- Estimate generator loading in kVA for a three-phase circuit
- Check a panel's apparent power demand against its rated capacity