How to convert British thermal units to kilocalories
Formula: kcal = BTU × 0.252164
Worked example: 10,000 BTU → 10,000 × 0.252164 = 2,521.64 kcal
British thermal units to kilocalories conversion chart
| British thermal units (BTU) | Kilocalories (kcal) |
|---|---|
| 1 BTU | 0.252164 kcal |
| 2 BTU | 0.504329 kcal |
| 3 BTU | 0.756493 kcal |
| 4 BTU | 1.00866 kcal |
| 5 BTU | 1.26082 kcal |
| 6 BTU | 1.51299 kcal |
| 7 BTU | 1.76515 kcal |
| 8 BTU | 2.01732 kcal |
| 9 BTU | 2.26948 kcal |
| 10 BTU | 2.52164 kcal |
| 12 BTU | 3.02597 kcal |
| 15 BTU | 3.78247 kcal |
| 20 BTU | 5.04329 kcal |
| 25 BTU | 6.30411 kcal |
| 30 BTU | 7.56493 kcal |
| 40 BTU | 10.0866 kcal |
| 50 BTU | 12.6082 kcal |
| 75 BTU | 18.9123 kcal |
| 100 BTU | 25.2164 kcal |
| 250 BTU | 63.0411 kcal |
| 500 BTU | 126.082 kcal |
| 1,000 BTU | 252.164 kcal |
What is a British thermal unit?
The British thermal unit, about 1,055 joules, is the heat needed to warm one pound of water by one degree Fahrenheit. US furnaces, water heaters, grills and natural gas are rated in BTU.
What is a kilocalorie?
The kilocalorie equals 1,000 small calories, or 4.184 kilojoules. It is the Calorie printed on US Nutrition Facts labels and used in diet and exercise tracking: an adult needs roughly 2,000 to 2,500 kcal a day.