Quick answer: 1 Watt-hour (Wh) in BTU
1 Wh equals 3.412142 BTU. To convert Watt-hour (Wh) to BTU, multiply by 3.412142 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 Watt-hour (Wh) in BTU?
- Multiply 1 by the conversion factor 3.412142
- 1 Watt-hour (Wh) = 3.412142 BTU
How much is 5 Watt-hour (Wh) in BTU?
- Multiply 5 by the conversion factor 3.412142
- 5 Watt-hour (Wh) = 17.060708 BTU
How much is 25 Watt-hour (Wh) in BTU?
- Multiply 25 by the conversion factor 3.412142
- 25 Watt-hour (Wh) = 85.303541 BTU
Quick Conversion Reference Table
| Watt-hour (Wh) (Wh) | BTU (BTU) |
|---|---|
| 1 Wh (Watt-hour (Wh)) | 3.412142 BTU (BTU) |
| 2 Wh (Watt-hour (Wh)) | 6.824283 BTU (BTU) |
| 5 Wh (Watt-hour (Wh)) | 17.060708 BTU (BTU) |
| 10 Wh (Watt-hour (Wh)) | 34.121416 BTU (BTU) |
| 20 Wh (Watt-hour (Wh)) | 68.242833 BTU (BTU) |
| 50 Wh (Watt-hour (Wh)) | 170.607082 BTU (BTU) |
| 100 Wh (Watt-hour (Wh)) | 341.214163 BTU (BTU) |
| 500 Wh (Watt-hour (Wh)) | 1706.07 BTU (BTU) |
| 1000 Wh (Watt-hour (Wh)) | 3412.14 BTU (BTU) |
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FAQ
How much is 1 Watt-hour (Wh) in BTU?
1 Watt-hour (Wh) = 3.412142 BTU.
How do I convert Watt-hour (Wh) to BTU?
Enter your value in Watt-hour (Wh) into the converter above and the result in BTU appears instantly. 1 Wh equals 3.412142 BTU — just multiply your value by 3.412142.
What is the formula for Watt-hour (Wh) to BTU?
The formula is: value in BTU = value in Watt-hour (Wh) × 3.412142. For example, 5 Wh × 3.412142 = 17.060708 BTU.
Is this Watt-hour (Wh) to BTU converter free and accurate?
Yes. This Watt-hour (Wh) to BTU converter is 100% free, uses the exact international conversion factor (3.412142), and works on any device with no signup.
How do I convert BTU back to Watt-hour (Wh)?
To convert back, divide by 3.412142 (or multiply by 0.293071). You can also use our dedicated How Many Watt-hour (Wh) in 1 BTU? 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.