Quick answer: 1 BTU in Watt-hour (Wh)
1 BTU equals 0.293071 Wh. To convert BTU to Watt-hour (Wh), multiply by 0.293071 using the free calculator above — no signup needed.
Energy & Work units
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About Energy & Work Converter
The Energy & Work Converter converts between 7 different units, including Joule, Kilojoule, Calorie, Kilocalorie (kcal), Watt-hour (Wh). The base unit is the Joule, and every other unit on this page is defined as an exact multiple of it. Type any value into the calculator above to convert instantly — free, unlimited, no signup and nothing to install.
Common equivalents: 1 Joule = 0.001 Kilojoule, 0.239006 Calorie, 0.000239006 Kilocalorie (kcal).
Scale of this category: the smallest unit is the Joule (J) and the largest is the Kilowatt-hour (kWh) (kWh).
Last updated: 2026-09-15
Energy & Work conversion factors
| Unit | Symbol | Value in Joule |
|---|---|---|
| Joule | J | 1 J = 1 J |
| Kilojoule | kJ | 1 kJ = 1000 J |
| Calorie | cal | 1 cal = 4.184 J |
| Kilocalorie (kcal) | kcal | 1 kcal = 4184 J |
| Watt-hour (Wh) | Wh | 1 Wh = 3600 J |
| Kilowatt-hour (kWh) | kWh | 1 kWh = 3600000 J |
| BTU | BTU | 1 BTU = 1055.06 J |
Worked Examples
See exactly how the conversion works with real numbers, step by step.
How much is 1 BTU in Watt-hour (Wh)?
- Multiply 1 by the conversion factor 0.293071
- 1 BTU = 0.293071 Watt-hour (Wh)
How much is 10 BTU in Watt-hour (Wh)?
- Multiply 10 by the conversion factor 0.293071
- 10 BTU = 2.930711 Watt-hour (Wh)
How much is 100 BTU in Watt-hour (Wh)?
- Multiply 100 by the conversion factor 0.293071
- 100 BTU = 29.307107 Watt-hour (Wh)
Quick Conversion Reference Table
| BTU (BTU) | Watt-hour (Wh) (Wh) |
|---|---|
| 1 BTU (BTU) | 0.293071 Wh (Watt-hour (Wh)) |
| 2 BTU (BTU) | 0.5861420000000001 Wh (Watt-hour (Wh)) |
| 5 BTU (BTU) | 1.465355 Wh (Watt-hour (Wh)) |
| 10 BTU (BTU) | 2.930711 Wh (Watt-hour (Wh)) |
| 20 BTU (BTU) | 5.861421 Wh (Watt-hour (Wh)) |
| 50 BTU (BTU) | 14.653554 Wh (Watt-hour (Wh)) |
| 100 BTU (BTU) | 29.307107 Wh (Watt-hour (Wh)) |
| 500 BTU (BTU) | 146.535535 Wh (Watt-hour (Wh)) |
| 1000 BTU (BTU) | 293.07107 Wh (Watt-hour (Wh)) |
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How to Use This Converter
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FAQ
How much is 1 BTU in Watt-hour (Wh)?
1 BTU = 0.293071 Watt-hour (Wh).
How do I convert BTU to Watt-hour (Wh)?
Enter your value in BTU into the converter above and the result in Watt-hour (Wh) appears instantly. 1 BTU equals 0.293071 Wh — just multiply your value by 0.293071.
What is the formula for BTU to Watt-hour (Wh)?
The formula is: value in Watt-hour (Wh) = value in BTU × 0.293071. For example, 10 BTU × 0.293071 = 2.930711 Wh.
Is this BTU to Watt-hour (Wh) converter free and accurate?
Yes. This BTU to Watt-hour (Wh) converter is 100% free, uses the exact international conversion factor (0.293071), and works on any device with no signup.
How do I convert Watt-hour (Wh) back to BTU?
To convert back, divide by 0.293071 (or multiply by 3.412142). You can also use our dedicated How Many BTU in 1 Watt-hour (Wh)? page for instant results.
Do I need to download an app or sign up?
No. The converter runs entirely in your browser — nothing to install, no account, no fees. It even keeps working offline once the page has loaded.
Which Energy & Work units are supported?
This converter supports 7 units: Joule, Kilojoule, Calorie, Kilocalorie (kcal), Watt-hour (Wh), Kilowatt-hour (kWh), BTU.