Apparent Power Converter

Convert apparent power between volt-ampere (VA), kilovolt-ampere (kVA), megavolt-ampere (MVA), and gigavolt-ampere (GVA). Apparent power is the product of voltage and current in an AC circuit and is essential for sizing transformers, generators, and circuit breakers.

What Is Apparent Power?

Apparent power ($S$) combines real power and reactive power in AC systems. It is measured in volt-amperes (VA) rather than watts because the voltage and current may be out of phase. The relationship is $S = V \times I$ for single-phase circuits.

Frequently Asked Questions

What is the difference between VA and kVA?

One kilovolt-ampere (kVA) equals 1000 volt-amperes (VA). kVA is the standard unit for transformer and generator ratings.

How is apparent power different from real power?

Real power (watts) does useful work. Apparent power (VA) is the total power in the circuit, including reactive components. Real power equals apparent power multiplied by power factor.

When would I use MVA or GVA?

Megavolt-amperes (MVA) and gigavolt-amperes (GVA) are used for large industrial plants, substations, and utility-scale equipment where power levels reach millions or billions of volt-amperes.

Can I convert between VA and watts?

VA and watts are related through power factor: watts = VA × power factor. Use our Power Converter for watt-based conversions.

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Apparent Power Converter