Volt-Amperes to Watts Converter
Enter the power in volt-amperes below to convert it to watts.
Convert Volt-Amperes to Watts
Enter a value in volt-amperes (VA) to convert to watts (W).
Volt-Ampere to Watt Conversion Table
Table showing various volt-ampere measurements converted to watts. Click any preset value or arrow to load it into the converter.
How to Convert Volt-Amperes to Watts
To convert volt-amperes to watts, multiply the power by the following conversion ratio: 1 watts/volt-ampere.
Since one volt-ampere is equal to 1 watts, you can use this simple formula to convert:
The power in watts is equal to the power in volt-amperes multiplied by 1.
For example, here's how to convert 5 volt-amperes to watts using the formula above.
How Many Watts Are in a Volt-Ampere?
There are 1 watts in a volt-ampere, which is why we use this value in the formula above.
Our volt-ampere to watt calculator automatically converts your power measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Volt-Amperes and watts are both units used to measure power. Keep reading to learn more about each unit.
What Is a Volt-Ampere?
A volt-ampere is a unit of power equal to 1 watts (W), the base unit for power. Apparent electrical power unit (equivalent to 1 W at unity power factor). [1]
The volt-ampere is classified as an International System of Units (SI) unit of power. Volt-Amperes can be abbreviated as VA; for example, 1 volt-ampere can be written as 1 VA.
When working with volt-amperes (VA) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, volt-amperes (VA) are widely used across standard power applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
What Is a Watt?
Coherent SI unit of power equal to 1 Joule per second (1 J/s). It serves as a primary reference unit for measuring power across scientific and practical applications. [2]
The watt is classified as an International System of Units (SI) unit of power. Watts can be abbreviated as W; for example, 1 watt can be written as 1 W.
As the primary coherent reference unit for power in this category, all other power units are mathematically anchored to the watt (W).
In practice, watts (W) are widely used across standard power applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
When converting power between volt-amperes (VA) and watts (W), keep full floating-point precision (1 VA = 1 W; 1 W = 1 VA) during intermediate calculations and round only the final watt figure to match your instrument tolerance.
More Volt-Ampere & Watt Conversions
Need to calculate in the opposite direction? Use our watts to volt-amperes calculator to switch your starting unit immediately. You can also explore related tools such as converting watts to volt-amperes, converting horsepower (hp) to watts, or converting btu/hr to watts.
Convert from Volt-Amperes
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Power & Radiant Flux))·Power Metrology Standard — Volt-Amperes (VA) to Watts (W)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Watt (W))·Unit Specifications: Volt-Ampere (VA) (VA) & Watt (W)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Power)·Conversion Factors & Mathematical Basis (VA to W)