Online Calculators & Tools





Amps to VA calculator or converter

Amps (A) to volt-amps (VA) calculator and how to calculate or how to use it.

Enter phase number, the current in amps, the voltage in voltsand press the Calculate button,

to get the apparent power in volt-amps:



Select phase #:  
 
Enter amps: A
 
Enter line to line volts: V
 
   
 
Result in volt-amps: VA



Single phase amps to VA calculation formula & chart

The apparent power S in volt-amps is equal to current I in amps, times the voltage V in volts:

S(VA) = I(A) × V(V)

3 phase amps to VA calculation formula

The apparent power S in kilovolt-amps is equal to square root if 3 current I in amps, times the line to line voltage VL-L in volts:

S(VA) = 3 × I(A) × VL-L(V)  = 3 × I(A) × VL-N(V)