1 British thermal unit = 1055.06 joules
Convert British thermal units to joules.
Both directions on one page — swap the units and the whole thing runs backwards.
Type a value, or “5cm to in”
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The formula
J = BTU × 1055.06
Worked through with a real value: 10 British thermal units = 10550.6 joules.
Going the other way: BTU = J × 0.000947817, so 1 joule = 0.000947817 British thermal units.
What each unit is
- British thermal unit BTU
- The British thermal unit, defined as the energy needed to raise one pound of water by one degree Fahrenheit. Still used in HVAC and heating systems.
- joule J
- The SI unit of energy, equal to the work done by a force of one newton acting over a distance of one metre.
Where these come from
- 1 British thermal unit = 1055.05585262 joules
Every other number on this page is computed from those, and each category is pinned to conversions worked out by hand from the units' primary definitions before it ships.
Conversion tables
| British thermal units (BTU) | joules (J) |
|---|---|
| 1 | 1055.06 |
| 2 | 2110.11 |
| 3 | 3165.17 |
| 4 | 4220.22 |
| 5 | 5275.28 |
| 6 | 6330.34 |
| 7 | 7385.39 |
| 8 | 8440.45 |
| 9 | 9495.5 |
| 10 | 10550.6 |
| 20 | 21101.1 |
| 25 | 26376.4 |
| 50 | 52752.8 |
| 75 | 79129.2 |
| 100 | 105506 |
| joules (J) | British thermal units (BTU) |
|---|---|
| 1 | 0.000947817 |
| 2 | 0.00189563 |
| 3 | 0.00284345 |
| 4 | 0.00379127 |
| 5 | 0.00473909 |
| 6 | 0.0056869 |
| 7 | 0.00663472 |
| 8 | 0.00758254 |
| 9 | 0.00853035 |
| 10 | 0.00947817 |
| 20 | 0.0189563 |
| 25 | 0.0236954 |
| 50 | 0.0473909 |
| 75 | 0.0710863 |
| 100 | 0.0947817 |
Questions
How many joules are in a British thermal unit?
1 British thermal unit = 1055.06 joules.
How do I convert British thermal units to joules?
Use J = BTU × 1055.06. For example, 10 British thermal units = 10550.6 joules.
How many British thermal units are in one joule?
1 joule = 0.000947817 British thermal units.
What is 10 British thermal units in joules?
10 British thermal units = 10550.6 joules.
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