Table Of Contents
British thermal units to joules Conversion
1 British thermal units (BTU) is equal to 1055.055853 joules (joule).
1 BTU = 1055.055853 joule
or
1 joule = 0.0009478171203 BTU
Formula
To convert a energy from British thermal units (BTU) to joules (joule), multiply the energy in British thermal units by 1055.055853
e(joule) = e(BTU) × 1055.055853
Examples:
Convert 1000 British thermal units to joules:
e(joule) = 1000BTU × 1055.055853 = 1055055.853 joule
Conversion table
| British thermal units (BTU) | Joules (joule) |
|---|---|
| 1 BTU | 1055.05585262 joule |
| 2 BTU | 2110.11170524 joule |
| 3 BTU | 3165.16755786 joule |
| 5 BTU | 5275.2792631 joule |
| 10 BTU | 10550.5585262 joule |
| 20 BTU | 21101.1170524 joule |
| 25 BTU | 26376.3963155 joule |
| 50 BTU | 52752.792631 joule |
| 100 BTU | 105505.585262 joule |
| 250 BTU | 263763.963155 joule |
| 500 BTU | 527527.92631 joule |
| 1000 BTU | 1055055.85262 joule |
| Joules (joule) | British thermal units (BTU) |
|---|---|
| 1 joule | 9.47817e-4 BTU |
| 2 joule | 0.001895634 BTU |
| 3 joule | 0.002843451 BTU |
| 5 joule | 0.004739086 BTU |
| 10 joule | 0.009478171 BTU |
| 20 joule | 0.018956342 BTU |
| 25 joule | 0.023695428 BTU |
| 50 joule | 0.047390856 BTU |
| 100 joule | 0.094781712 BTU |
| 250 joule | 0.23695428 BTU |
| 500 joule | 0.47390856 BTU |
| 1000 joule | 0.94781712 BTU |
Frequently asked questions
How do I convert British thermal units to joules?
Multiply the value in British thermal units by 1055.055853 to get the result in joules. For example, 5 BTU × 1055.055853 = 5275.2792631 joule.
How many joules are in 1 British thermal units?
1 British thermal units (BTU) is equal to 1055.05585262 joules (joule).
How do I convert joules back to British thermal units?
Use the inverse operation: divide the value in joules by 1055.055853 to get the result in British thermal units.
How accurate is the British thermal units to joules conversion?
The converter multiplies by the conversion factor 1055.055853 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)
