The volt (V) is the SI unit of electric potential difference, the "push" that drives current through a circuit.
Volts to Watt Hours
Convert Volt (V) to Watt-hour (Wh) instantly with an exact formula, conversion table, and FAQ.
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Convert volts (V) to watt hours (Wh) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A watt-hour (Wh) is the electrical energy delivered by one watt sustained for one hour.
Wh = V × 0.000278
Results update instantly for Volts to Watt Hours conversions.
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Formula
Wh = V × 0.000278
V = Wh × 3600
Conversion table
| 1 V | 0.000278 Wh |
| 5 V | 0.001389 Wh |
| 10 V | 0.002778 Wh |
| 20 V | 0.005556 Wh |
| 50 V | 0.013889 Wh |
| 100 V | 0.027778 Wh |
| 500 V | 0.138889 Wh |
| 1000 V | 0.277778 Wh |
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How the formula works
Both volt and watt-hour measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in volts by 0.000278 to get watt hours. To reverse the conversion, multiply a watt-hour value by 3600 to get back to volts.
Frequently asked questions
What is Volt (V)?
The volt (V) is the SI unit of electric potential difference, the "push" that drives current through a circuit.
What is Watt-hour (Wh)?
A watt-hour (Wh) is the electrical energy delivered by one watt sustained for one hour.
How do I convert volts to watt hours?
Multiply the volt value by 0.000278 to get the equivalent in watt hours. For example, 5 V × 0.000278 = 0.001389 Wh.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 0.000278 is an exact, non-rounded value.
Can I convert watt hours back to volts?
Yes. Divide the watt-hour value by 0.000278, or multiply it by 3600, to get volts.
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About converting volts to watt hours
The volt (V) is the SI unit of electric potential difference, the "push" that drives current through a circuit. A watt-hour (Wh) is the electrical energy delivered by one watt sustained for one hour.
Use this calculator to move between volts and watt hours accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.