Amps to VA Calculator

Convert amps to volt-amps (VA) for single-phase and three-phase circuits. Calculate apparent power for UPS sizing.

ByPRIYA SHARMAโ€ขUpdated April 20, 2026
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Reviewed byDR. RAJIV NAIR
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Fact checked byNEHA KAPOOR
A
V

APPARENT POWER

1,800 VA

IN kVA

1.8 kVA

FORMULA

VA = I ร— V

๐Ÿ’ก How to Convert Amps to VA

Formula

Single-Phase: VA = I ร— V
Three-Phase: VA = I ร— V ร— โˆš3

Example: 15A at 120V โ†’ VA = 15 ร— 120 = 1,800 VA
15A ร— 120V = 1,800 VA. This is the apparent power drawn from the circuit.

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