Free instant BTU → kJ converter. No signup, no uploads — everything is calculated privately in your browser.
1 BTU = 1.05506 kilojoules
1 btu = 1.05506 kilojoules
Free, instant, and 100% private — every calculation runs in your browser. Nothing is uploaded.
1 British thermal unit equals 1.05506 kilojoules. To convert btu to kilojoules, multiply the value by 1.05505585262.
1 British thermal unit = 1.05506 kilojoules. Formula: value × 1.05505585262
Example: 1 BTU → 1.05506 kJ. Type any value in the converter above to see it converted live.
| BTU (BTU) | Kilojoules (kJ) |
|---|---|
| 1 BTU | 1.05506 kJ |
| 2 BTU | 2.11011 kJ |
| 5 BTU | 5.27528 kJ |
| 10 BTU | 10.5506 kJ |
| 25 BTU | 26.3764 kJ |
| 50 BTU | 52.7528 kJ |
| 100 BTU | 105.506 kJ |
| 250 BTU | 263.764 kJ |
| 500 BTU | 527.528 kJ |
| 1,000 BTU | 1,055.06 kJ |
1 British thermal unit = 1.05506 kilojoules. Formula: value × 1.05505585262. Enter the value above and the result appears instantly — the calculation runs entirely in your browser.
Exactly: 1 British thermal unit = 1.05505585262 kilojoules. The reverse factor is 1 kilojoule = 0.9478171203133172 btu.
1 BTU = 1.05506 kJ; 10 BTU = 10.5506 kJ; 100 BTU = 105.506 kJ. Use the full conversion table below for more reference values.
No — and the capital letter matters. A food Calorie (with a capital C) is a kilocalorie: 1,000 small calories. This converter treats them correctly: 1 kcal = 4.184 kJ = 1,000 cal. Energy labels on food almost always mean kilocalories, even where the label just says "calories".