Free instant BTU → cal converter. No signup, no uploads — everything is calculated privately in your browser.
1 BTU = 252.164 calories
1 btu = 252.164 calories
Free, instant, and 100% private — every calculation runs in your browser. Nothing is uploaded.
1 British thermal unit equals 252.164 calories. To convert btu to calories, multiply the value by 252.1644007217973.
1 British thermal unit = 252.164 calories. Formula: value × 252.1644007217973
Example: 1 BTU → 252.164 cal. Type any value in the converter above to see it converted live.
| BTU (BTU) | Calories (cal) |
|---|---|
| 1 BTU | 252.164 cal |
| 2 BTU | 504.329 cal |
| 5 BTU | 1,260.82 cal |
| 10 BTU | 2,521.64 cal |
| 25 BTU | 6,304.11 cal |
| 50 BTU | 12,608.2 cal |
| 100 BTU | 25,216.4 cal |
| 250 BTU | 63,041.1 cal |
| 500 BTU | 126,082 cal |
| 1,000 BTU | 252,164 cal |
1 British thermal unit = 252.164 calories. Formula: value × 252.1644007217973. Enter the value above and the result appears instantly — the calculation runs entirely in your browser.
Exactly: 1 British thermal unit = 252.1644007217973 calories. The reverse factor is 1 calorie = 0.003965666831390919 btu.
1 BTU = 252.164 cal; 10 BTU = 2,521.64 cal; 100 BTU = 25,216.4 cal. 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".