3-Phase Power Calculator

Full power calculator for balanced three-phase AC circuits — kW, kVA, kVAR, amps.

Line-to-Line Voltage (V)

V

Line Current (A)

A

Power Factor

PF

3-Phase Power

Formulas

Apparent power: S (kVA) = √3 × VL × IL / 1000
Real power: P (kW) = S × PF
Reactive power: Q (kVAR) = √(S² − P²)
Phase voltage: Vph = VL / √3
√3 ≈ 1.7321