Convert kilojoules to BTU
1 kJ = 0.94781712 BTU. Change the amount below, or read the formula and the reference table further down.
1 kilojoule equals
BTU
1 kJ = 0.94781712 BTU
The formula
Kilojoules and BTU both measure energy from the same zero, so a single multiplier does the job.
BTU = kJ × 0.9478171203
Going the other way? Convert BTU to kilojoules.
Kilojoules to BTU table
Common values, rounded for reading.
| Kilojoules (kJ) | BTU (BTU) |
|---|---|
| 1 | 0.947817 |
| 2 | 1.8956 |
| 3 | 2.8435 |
| 4 | 3.7913 |
| 5 | 4.7391 |
| 6 | 5.6869 |
| 7 | 6.6347 |
| 8 | 7.5825 |
| 9 | 8.5304 |
| 10 | 9.4782 |
| 15 | 14.2173 |
| 20 | 18.9563 |
| 25 | 23.6954 |
| 30 | 28.4345 |
| 40 | 37.9127 |
| 50 | 47.3909 |
| 75 | 71.0863 |
| 100 | 94.7817 |
| 250 | 236.95 |
| 500 | 473.91 |
| 1,000 | 947.82 |
Questions people ask
- How many BTU are in a kilojoule?
- One kilojoule equals 0.9478171203 BTU.
- How do I convert kilojoules to BTU by hand?
- Multiply the number of kilojoules by 0.9478171203. For a rough check, 0.948 is close enough for most everyday use.
- What is 1 kilojoule in BTU?
- 1 kilojoule is 0.94781712 BTU.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.