BTU to Joules Converter
How to convert BTU to joules
joules = BTU × 1,055.05585
To convert BTU to joules, multiply the number of BTU by 1,055.05585.
1 BTU = 1,055.05585 J
Examples
- 1,000 BTU × 1,055.05585 = 1,055,055.85 J
- About one therm: 100,000 BTU × 1,055.05585 = 105,505,585 J
Good to know
One International Table BTU is about 1055 joules, or 1.055 kilojoules.
This is the International Table BTU, 1055.05585262 J. Other definitions exist, such as the thermochemical BTU (about 1054.35 J); they differ from it by up to about 0.5%.
BTU to joules conversion table
| BTU | Joules (J) |
|---|---|
| 1 BTU | 1,055.05585 J |
| 10 BTU | 10,550.5585 J |
| 100 BTU | 105,505.585 J |
| 500 BTU | 527,527.926 J |
| 1,000 BTU | 1,055,055.85 J |
| 2,000 BTU | 2,110,111.71 J |
| 5,000 BTU | 5,275,279.26 J |
| 10,000 BTU | 10,550,558.5 J |
| 12,000 BTU | 12,660,670.2 J |
| 20,000 BTU | 21,101,117.1 J |
| 50,000 BTU | 52,752,792.6 J |
| 100,000 BTU | 105,505,585 J |
| 500,000 BTU | 527,527,926 J |
| 1,000,000 BTU | 1,055,055,850 J |
Unit definitions
- BTU
- The British thermal unit is roughly the heat needed to raise one pound of water by one degree Fahrenheit. The International Table BTU is exactly 1055.05585262 joules, and it is used for heating and cooling in the United States.
- Joule (J)
- The joule is the SI unit of energy, equal to the work done by a force of one newton over one meter, or one watt for one second.