kVA Calculator - Free Download

This kVA Calculator is the essential electrical calculator for electricians and engineers. Quickly convert or calculate kVA, kW and Power Factor or kVA, Volts and Amps — no more manual formula lookups.
Perfect for converting kVA to Amps, or kW to KVA when sizing generators or UPS systems.

Includes Single-Phase and Three-Phase, kVA electrical calculations.

Enter any two values to calculate the third.

kVA Single Phase (1-Phase) Calculations:
- Calculate kVA.
- Calculate Volts.
- Calculate Amps.

kVA Three Phase (3-Phase) Calculations:
- Calculate kVA.
- Calculate Volts.
- Calculate Amps.

kVA, Power Factor & kW Calculations:
- Calculate kVA.
- Calculate Power Factor.
- Calculate kW.

Electrical units are measured in the following:
Current (I) = Amps.
Power (P) = Watts (or kW).
Volts (V) = Voltage.

Supports dark mode and 16 languages.

Simple, fast, and accurate — the kVA calculator you'll reach for every day.

Trusted by the professionals since 2011.