Watts to Volt-Amperes Converter
Enter the power in watts below to convert it to volt-amperes.
Convert Watts to Volt-Amperes
Enter a value in watts (W) to convert to volt-amperes (VA).
Watt to Volt-Ampere Conversion Table
Table showing various watt measurements converted to volt-amperes. Click any preset value or arrow to load it into the converter.
How to Convert Watts to Volt-Amperes
To convert watts to volt-amperes, multiply the power by the following conversion ratio: 1 volt-amperes/watt.
Since one watt is equal to 1 volt-amperes, you can use this simple formula to convert:
The power in volt-amperes is equal to the power in watts multiplied by 1.
For example, here's how to convert 5 watts to volt-amperes using the formula above.
How Many Volt-Amperes Are in a Watt?
There are 1 volt-amperes in a watt, which is why we use this value in the formula above.
Our watt to volt-ampere calculator automatically converts your power measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Watts and volt-amperes are both units used to measure power. Keep reading to learn more about each unit.
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. [1]
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.
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). [2]
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.
When converting power between watts (W) and volt-amperes (VA), keep full floating-point precision (1 W = 1 VA; 1 VA = 1 W) during intermediate calculations and round only the final volt-ampere figure to match your instrument tolerance.
More Watt & Volt-Ampere Conversions
Need to calculate in the opposite direction? Use our volt-amperes to watts calculator to switch your starting unit immediately. You can also explore related tools such as converting volt-amperes to watts, converting watts to horsepower (hp), or converting watts to kilowatts.
Convert from Watts
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Power & Radiant Flux))·Power Metrology Standard — Watts (W) to Volt-Amperes (VA)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Watt (W))·Unit Specifications: Watt (W) & Volt-Ampere (VA) (VA)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Power)·Conversion Factors & Mathematical Basis (W to VA)