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kVA Calculator

Select a phase and enter volts and amps to calculate kVA for 3-phase or 1-phase padmount transformers.

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kVA

How to use the kVA calculator

kVA = (Amps × Volts) / 1000

Single phase formula

kVA = (Amps × 1.732 × Volts) / 1000

Three phase formula

Calculator variables & definitions

Below are the definitions for the different terms that this calculator uses

What is Voltage?

Electric potential, measured in volts (V), represents the amount of electrical potential energy per unit charge at a specific point in the circuit. Voltage is the driving force that causes electric charges to move within a circuit.

What is kVA?

kVA, or kilovolt-ampere, is a unit of apparent power in an AC (alternating current) electrical system. It represents the combination of both real power (used to perform work) and reactive power (used to sustain electric and magnetic fields).

What are Amps?

Amps, short for amperes, measure the electric current in a circuit—that is, the rate at which electric charge flows through a conductor.

What is a transformer?

A transformer is an electrical device that changes voltage levels from one value to another. It can either step voltage up (increase) or step it down (decrease), depending on the application.

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