1 joule (J) = 0.0009478171 British thermal units (BTU). To convert, divide by 1,055.055853: BTU = J ÷ 1,055.055853. For example, 500 J = 0.4739085602 BTU.
BTU = J ÷ 1,055.055853
Joules to British thermal units table
| Joules (J) | British thermal units (BTU) |
|---|---|
| 100 | 0.094781712 |
| 200 | 0.1895634241 |
| 300 | 0.2843451361 |
| 400 | 0.3791268481 |
| 500 | 0.4739085602 |
| 1,000 | 0.9478171203 |
| 2,000 | 1.895634241 |
| 2,500 | 2.369542801 |
| 5,000 | 4.739085602 |
| 10,000 | 9.478171203 |
| 25,000 | 23.69542801 |
| 50,000 | 47.39085602 |
| 100,000 | 94.78171203 |
The two units
Joule (J). The SI unit of energy: one newton acting over one meter.
British thermal unit (BTU). The International Table BTU, used for heating and air-conditioning ratings.
Convert joules to other units
- Joules to kilojoules — 1 J = 0.001 kJ
- Joules to calories — 1 J = 0.2390057361 cal
- Joules to kilocalories — 1 J = 0.0002390057 kcal
- Joules to watt-hours — 1 J = 0.0002777778 Wh
- Joules to kilowatt-hours — 1 J = 2.777778e-7 kWh
- Joules to electronvolts — 1 J = 6.241509e+18 eV
Convert other units to British thermal units
Questions people ask
- How many British thermal units are in a joule?
- 0.0009478171.
- How do you convert joules to British thermal units?
- BTU = J ÷ 1,055.055853. It is the same as dividing by 1,055.055853.
- How do you convert British thermal units back to joules?
- J = BTU × 1,055.055853. See British thermal units to joules.
Results use the legal definitions of each unit and are checked against the Pint unit library. Display rounds to 10 significant digits. All unit conversions · More tools
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