Convert BTU to joules
British thermal units to joules. Enter a value to convert, or use the BTU to joules chart further down the page.
1 British thermal unit equals 1,055.055853 joules. Going the other way, 1 joule = 0.0009478171203 British thermal units.
How to convert BTU to joules
To convert British thermal units to joules, multiply the British thermal unit value by 1055.055853. You can also divide by 0.0009478171203 to get the same answer.
J = BTU × 1055.055853
Worked example
Convert 15 BTU to joules:
15 BTU = 15,825.83779 J
BTU to joules conversion chart
Use this BTU to joules table for quick reference without typing anything.
| British thermal units (BTU) | joules (J) |
|---|---|
| 0.01 BTU | 10.55055853 J |
| 0.1 BTU | 105.5055853 J |
| 1 BTU | 1,055.055853 J |
| 2 BTU | 2,110.111705 J |
| 3 BTU | 3,165.167558 J |
| 5 BTU | 5,275.279263 J |
| 10 BTU | 10,550.55853 J |
| 20 BTU | 21,101.11705 J |
| 50 BTU | 52,752.79263 J |
| 100 BTU | 105,505.5853 J |
| 1,000 BTU | 1,055,055.853 J |
What is a British thermal unit?
The BTU is the energy needed to raise one pound of water by one degree Fahrenheit — about 1,055 joules. It rates heating and air-conditioning equipment in the US.
What is a joule?
The joule is the SI unit of energy: the work done by a force of one newton acting over one meter.
Frequently asked questions
How many joules are in a British thermal unit?
1 BTU equals 1,055.055853 joules. Going the other way, 1 joules is 0.0009478171203 BTU.
How do you convert BTU to joules?
To convert British thermal units to joules, multiply the British thermal unit value by 1055.055853. You can also divide by 0.0009478171203 to get the same answer.
What is 10 BTU in joules?
10 BTU equals 10,550.55853 joules. The conversion chart on this page lists the other values people look up most often.
Related energy conversions
Convert BTU to other units
- joules to BTU
- BTU to kilojoules
- BTU to calories
- BTU to kilocalories
- BTU to kWh
- BTU to Wh
- BTU to foot pounds
Convert other units to joules
- kilojoules to joules
- calories to joules
- kilocalories to joules
- kWh to joules
- Wh to joules
- foot pounds to joules
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