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Volt-Amps to Amps Calculator

Convert apparent power in volt-amps into current for single-phase or three-phase AC using the entered supply voltage, with supporting kVA and the phase-specific working equation.

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Conversions

Volt-amps to amps calculator: convert apparent power into current for AC systems

A volt-amps to amps calculator turns apparent power into current when you know the supply voltage. It is useful for quick AC load checks, comparing single-phase and three-phase current demand, and translating a VA rating into the current it implies before you get into wiring or protection design.

What this volt-amps to amps calculator solves

This page converts apparent power in volt-amps into current using the supplied voltage. Single-phase AC divides volt-amps by voltage directly. Balanced three-phase AC uses the same apparent-power relationship with the square-root-of-three line-voltage factor.

That makes the calculator a good fit when the equipment nameplate gives VA rather than watts. It lets you move from apparent power to current without manually rearranging the phase-specific formulas.

The current formulas behind the result

In single-phase mode, current equals volt-amps divided by voltage. In three-phase mode, the calculator divides volt-amps by the square-root-of-three multiplied by line voltage. The result panel also shows the supporting kilovolt-amp figure so larger values stay easy to read.

The exact working equation is displayed beside the result, which makes it easy to verify the calculation and confirm that the chosen phase mode matches the supply you are working with.

A = VA / V

Use for single-phase AC when apparent power and supply voltage are known.

A = VA / (√3 x V)

Use for balanced three-phase AC when line voltage and apparent power are known.

kVA = VA / 1,000

Shows the same apparent power in kilovolt-amps for readability.

How to interpret the current result

The current result is the load implied by the entered apparent power and voltage assumptions. That is useful for equipment comparisons, early supply checks, and spotting whether a nameplate rating translates into a realistic current draw for the intended phase setup.

Because the headline stays in amps, the page keeps the promised output unit visible instead of auto-scaling it into a different current prefix. The supporting kVA value still helps you compare the apparent-power magnitude directly.

What this simplified conversion does not replace

This calculator does not perform conductor sizing, breaker selection, motor-start analysis, or code-compliance checks. It also does not model reactive power beyond the phase relationship implied by the selected mode.

Use it as an educational and planning conversion tool. For installation or procurement decisions, verify the result against the actual nameplate, measured operating conditions, and the applicable electrical code or engineering standard.

Frequently asked questions

Why does the calculator ask for voltage if the nameplate already shows VA?

Because current depends on both apparent power and supply voltage. The same VA rating produces different current values at different voltages.

 What voltage should I use for three-phase calculations?

Use the line voltage that matches the balanced three-phase formula on this page. The calculator applies the √3 factor internally.

 Can I use this result to size wiring or breakers directly?

No. It only solves the current implied by the entered apparent power and voltage. Final protection and conductor sizing still require separate code-based checks.

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Convert current into apparent power in kilovolt-amps for single-phase or three-phase AC using the entered supply voltage, with supporting volt-amps and the phase-specific working equation.

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Convert real watts into apparent power in kilovolt-amps using the entered power factor, with supporting volt-amps and the exact kVA = W / (PF × 1,000) working equation.

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Convert current to kilowatts for DC, single-phase AC, or three-phase AC using entered voltage and power factor where needed.

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