BTU to Watt-hour
Convert BTU to Watt-hour instantly. Free online engineering unit converter with exact formula, conversion table and FAQ.
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Formula
Wh = BTU × 0.293071
BTU = Wh × 3.41214
Conversion table
| 1 BTU | 0.293071 Wh |
| 5 BTU | 1.46536 Wh |
| 10 BTU | 2.93071 Wh |
| 20 BTU | 5.86142 Wh |
| 50 BTU | 14.6536 Wh |
| 100 BTU | 29.3071 Wh |
| 500 BTU | 146.536 Wh |
| 1000 BTU | 293.071 Wh |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the BTU (BTU). British thermal unit.
What is the destination unit in this conversion?
The destination unit is the Watt-hour (Wh). A watt-hour is 3,600 joules.
How do I convert BTU to Watt-hour?
Multiply the BTU value by 0.293071. For example, 10 BTU × 0.293071 = 2.93071 Wh.
Is the BTU to Watt-hour conversion exact?
Yes. Both units belong to the same engineering measurement family (energy), so the ratio between them is a fixed, defined value rather than a measured approximation.
Where is this conversion commonly used?
It's used whenever a value expressed in BTU needs to be compared with, or reported in, Watt-hour, such as in engineering, scientific, or industrial calculations.
Can I convert Watt-hour back to BTU?
Yes. Multiply the Watt-hour value by 3.41214 to get BTU.
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About this conversion
This page converts BTU (BTU) to Watt-hour (Wh) within the engineering converter.
British thermal unit. A watt-hour is 3,600 joules.
The formula is Wh = BTU × 0.293071, based on each unit's fixed relationship to the energy base unit.
The conversion is exact, since it relies on a fixed numerical ratio between the two units rather than a measured or approximate value.
Use the calculator above for instant results, or the table below for common BTU values already converted to Watt-hour.