Electrical Calculators

This tool helps you to calculate the apparent power quickly. Enter phase number, the current in amps, the voltage in volts and press the Calculate button to get the apparent power in kilovolt-amps:

Convert amps to kva

Single phase amps to kVA calculation formula

The apparent power S in kilovolt-amps is equal to current I in amps, times the voltage V in volts, divided by 1000:

    • S(kVA) = I(A) × V(V) / 1000

Three phase amps to kVA calculation formula

1.Calculation with line to line voltage

The apparent power S in kilovolt-amps is equal to phase current I in amps, times the line to line RMS voltage VL-L in volts, divided by 1000:

      • S(kVA) = √3 × I(A) × VL-L(V) / 1000 

2.Calculation with line to neutral voltage

The apparent power S in kilovolt-amps is equal to phase current I in amps, times the line to neutral RMS voltage VL-N in volts, divided by 1000:

      • S(kVA) = 3 × I(A) × VL-N(V) / 1000