kVA to Amps Calculator | Apparent Power to Current Conversion

kVA to Amps (A) Calculator

Current in amps:

Calculation Formulas

Single phase kVA to amps calculation formula

I(A) = 1000 × S(kVA) / V(V)

Where:

  • I(A) is the current in amps
  • S(kVA) is the apparent power in kilovolt-amps
  • V(V) is the voltage in volts

Three phase kVA to amps calculation formula

Line to line voltage

I(A) = 1000 × S(kVA) / (√3 × VL-L(V))

Where:

  • I(A) is the current in amps
  • S(kVA) is the apparent power in kilovolt-amps
  • VL-L(V) is the line to line voltage in volts
  • VL-N(V) is the line to neutral voltage in volts

How to Convert kVA to Amps

To convert from kilovolt-amps (kVA) to amps (A), you need to know:

  1. Whether the circuit is single phase or three phase
  2. The voltage of the circuit
  3. For three phase circuits, whether the voltage measurement is line-to-line or line-to-neutral

Example Calculations

Single phase example

What is the current in amps when the apparent power is 3 kVA and the voltage supply is 110 volts?

I = 1000 × 3kVA / 110V = 27.27A

Three phase example (line to line voltage)

What is the current in amps when the apparent power is 3 kVA, the voltage supply is 110 volts (line to line), and the connection is three phase?

I = 1000 × 3kVA / (√3 × 110V) = 15.75A

kVA to Amps Conversion Table

kVA Voltage (V) Current (A) Phase
1 kVA 120 V 8.33 A Single
5 kVA 120 V 41.67 A Single
10 kVA 240 V 41.67 A Single
15 kVA 208 V 41.64 A Three (line-line)
25 kVA 480 V 30.07 A Three (line-line)
50 kVA 480 V 60.14 A Three (line-line)

This calculator provides a simple way to convert between kVA and amps for both single phase and three phase electrical systems.