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All calculatorsMethodology

kVA to Amps Calculator

Convert kVA to amps, amps to kVA, or kW to kVA with power factor for single-phase or three-phase line-to-line voltage, with kW and kvar shown.

Interactive calculator · Method KVA-TO-AMPS-1.0 · Last reviewed: 2026-11-04

Calculate your scenario

Single-phase: I = kVA × 1,000 ÷ V.

Your inputs

Try an example

Default worked example. Edit the inputs to calculate your scenario.

Default worked example

Current 41.67 A
Apparent power 10 kVA
Real power at entered power factor 8 kW
Reactive power 6 kvar
Supply basis Single-phase, 240 V

I = 10 kVA × 1,000 ÷ (240 V) = 41.67 A; kW = kVA × 0.8 = 8 kW.

How to use the calculator

Choose the conversion and supply type, enter the voltage, the value to convert and the power factor (it affects kW and kvar, and kVA in the kW mode).

What the result means

A 10 kVA single-phase load at 240 V draws about 41.67 A; at a 0.8 power factor it delivers 8 kW of real power.

Formula and units

Single-phase: I = kVA × 1,000 ÷ V. Three-phase with line-to-line voltage: I = kVA × 1,000 ÷ (√3 × V). Amps to kVA reverses these. kW = kVA × power factor, kVA = kW ÷ power factor, and kvar = kVA × √(1 − PF²).

Worked examples

10 kVA single-phase at 240 V: Voltage: 240 V; Value to convert (kVA, A or kW per the conversion): 10 kVA, A or kW; Power factor: 0.8 PF; Conversion: kva; Supply: single.
Example result: Current: 41.67 A; Apparent power: 10 kVA; Real power at entered power factor: 8 kW; Reactive power: 6 kvar; Supply basis: Single-phase, 240 V.

75 kW three-phase at 480 V, PF 0.85: Voltage: 480 V; Value to convert (kVA, A or kW per the conversion): 75 kVA, A or kW; Power factor: 0.85 PF; Conversion: kw; Supply: three.
Example result: Current: 106.13 A; Apparent power: 88.235 kVA; Real power at entered power factor: 75 kW; Reactive power: 46.481 kvar; Supply basis: Three-phase, 480 V line-to-line (√3 factor).

Limitations and common mistakes

Nameplate arithmetic for balanced, sinusoidal loads. It is not conductor, breaker, fuse, transformer or generator sizing and ignores starting current, harmonics, ambient derating and local electrical rules. Use line-to-line voltage for three-phase (for example 400 V or 480 V, not 230 V or 277 V).

Using the line-to-neutral voltage with the three-phase formula, which overstates the current by √3.

Sources and assumptions

Method KVA-TO-AMPS-1.0; last formula review 2026-11-04. Sources and their supported claims. Calculation methodology.