Table Of Contents
Watt-hour to British thermal units Conversion
1 watt-hour (W⋅hr) is equal to 3.412141633 British thermal units (BTU).
1 W⋅hr = 3.412141633 BTU
or
1 BTU = 0.2930710702 W⋅hr
Formula
To convert a energy from watt-hour (W⋅hr) to British thermal units (BTU), multiply the energy in watt-hour by 3.412141633
e(BTU) = e(W⋅hr) × 3.412141633
Examples:
Convert 50 watt-hour to British thermal units:
e(BTU) = 50W⋅hr × 3.412141633 = 170.6070817 BTU
Conversion table
| Watt-hour (W⋅hr) | British thermal units (BTU) |
|---|---|
| 1 W⋅hr | 3.412141633 BTU |
| 2 W⋅hr | 6.824283266 BTU |
| 3 W⋅hr | 10.236424899 BTU |
| 5 W⋅hr | 17.060708166 BTU |
| 10 W⋅hr | 34.121416331 BTU |
| 20 W⋅hr | 68.242832663 BTU |
| 25 W⋅hr | 85.303540828 BTU |
| 50 W⋅hr | 170.607081656 BTU |
| 100 W⋅hr | 341.214163313 BTU |
| 250 W⋅hr | 853.035408282 BTU |
| 500 W⋅hr | 1706.070816564 BTU |
| 1000 W⋅hr | 3412.141633128 BTU |
| British thermal units (BTU) | Watt-hour (W⋅hr) |
|---|---|
| 1 BTU | 0.29307107 W⋅hr |
| 2 BTU | 0.58614214 W⋅hr |
| 3 BTU | 0.879213211 W⋅hr |
| 5 BTU | 1.465355351 W⋅hr |
| 10 BTU | 2.930710702 W⋅hr |
| 20 BTU | 5.861421403 W⋅hr |
| 25 BTU | 7.326776754 W⋅hr |
| 50 BTU | 14.653553509 W⋅hr |
| 100 BTU | 29.307107017 W⋅hr |
| 250 BTU | 73.267767543 W⋅hr |
| 500 BTU | 146.535535086 W⋅hr |
| 1000 BTU | 293.071070172 W⋅hr |
Frequently asked questions
How do I convert watt-hour to British thermal units?
Multiply the value in watt-hour by 3.412141633 to get the result in British thermal units. For example, 5 W⋅hr × 3.412141633 = 17.060708166 BTU.
How many British thermal units are in 1 watt-hour?
1 watt-hour (W⋅hr) is equal to 3.412141633 British thermal units (BTU).
How do I convert British thermal units back to watt-hour?
Use the inverse operation: divide the value in British thermal units by 3.412141633 to get the result in watt-hour.
How accurate is the watt-hour to British thermal units conversion?
The converter multiplies by the conversion factor 3.412141633 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- NIST Guide to the SI, Appendix B.8: Factors for Units Listed Alphabetically (NIST SP 811, 2008 edition)
- NIST Guide to the SI (SP 811), Footnotes (notes 22 and 23)
- CODATA Value: electron volt-joule relationship (NIST Fundamental Physical Constants)
