Amps to Kilovolt-Amps (kVA) Electrical Conversion Calculator

Convert amps (A) to kilovolt-amps (kVA) by entering the current in amps and voltage below. Optionally, calculate a three-phase electrical circuit by selecting the phase.

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Do you want to convert kVA to amps?

How to Convert Amps to kVA

Amps are a measure of electrical current in an electrical circuit. kVA, or kilovolt-amps, are a measure of apparent power in a circuit, and 1 kVA is equal to 1,000 volt-amperes.

Because amps and kVA are different things in an electrical circuit, the voltage is also needed for the conversion. By also using the voltage, it’s possible to convert amps to kVA using the electrical power formula.

Using the electric power formula the formula to convert amps to kVA can be derived:
Power(kVA) = Current(A) × Voltage(V) ÷ 1,000

Thus, power in kVA is equal to the current in amps times the voltage, divided by 1,000.

For example, let’s find the apparent power in kVA for 220 volt circuit with 40 amps of current.

Power(kVA) = 40 A × 220 V ÷ 1,000
Power(kVA) = 8.8 kVA

How to Convert Amps to kVA in a Three-Phase Circuit

Three-phase circuits require a slightly different formula for the conversion. To convert A to kVA in a three-phase circuit use the following formula.

Power(kVA) = √3 × Current(A) × Voltage(V) ÷ 1,000

kVA is equal to the square root of 3 (1.732) times amps times volts, divided by 1,000.

For example, find the apparent power in kVA for 440 volt three-phase circuit with 150 amps of current.

Power(kVA) = 1.732 × 150 A × 440 V ÷ 1,000
Power(kVA) = 114.32 kVA

Be sure to check out our amps to volt-amps calculator for a similar conversion.