Convert British thermal units to kilocalories
British thermal unit (BTU) to kilocalorie (kcal). One British thermal unit equals 0.252164 kilocalories.
Formula
British thermal unit to kilocalorie conversion table
| British thermal units | Kilocalories | Kilocalories | British thermal units |
|---|---|---|---|
| 1 BTU | 0.252164 kcal | 1 kcal | 3.9657 BTU |
| 2 BTU | 0.504329 kcal | 2 kcal | 7.9313 BTU |
| 3 BTU | 0.756493 kcal | 3 kcal | 11.897 BTU |
| 5 BTU | 1.2608 kcal | 5 kcal | 19.8283 BTU |
| 10 BTU | 2.5216 kcal | 10 kcal | 39.6567 BTU |
| 20 BTU | 5.0433 kcal | 20 kcal | 79.3133 BTU |
| 50 BTU | 12.6082 kcal | 50 kcal | 198.28 BTU |
| 100 BTU | 25.2164 kcal | 100 kcal | 396.57 BTU |
| 500 BTU | 126.08 kcal | 500 kcal | 1982.83 BTU |
| 1000 BTU | 252.16 kcal | 1000 kcal | 3965.67 BTU |
To convert British thermal units to kilocalories, divide the number of British thermal units by 3.9657. One British thermal unit equals 0.252164 kilocalories, and one kilocalorie equals 3.9657 British thermal units, so the relationship is fixed and exact. As a worked example, 10 BTU comes to 2.5216 kcal. Enter your own figure in the converter above to get an instant answer, or use the swap button to flip the direction. This is a energy conversion, and like every tool on UnitGlide it runs locally in your browser with no account or upload required. The table further down shows a range of common British thermal unit values already worked out in kilocalories, plus the reverse kilocalorie to British thermal unit direction, which is handy for quick reference or double-checking a result by hand.
Frequently asked questions
How many kilocalories are in a British thermal unit?
One British thermal unit equals 0.252164 kilocalories. The ratio is constant, so you can multiply any number of British thermal units by 0.252164 to get kilocalories.
What is the formula to convert British thermal units to kilocalories?
Use kilocalories = British thermal units ÷ 3.9657. UnitGlide applies this exact formula for every value, so results stay accurate across the whole range.
How do I convert kilocalories back to British thermal units?
Go the other way by using one kilocalorie equals 3.9657 British thermal units. You can also press the swap button in the converter above to flip the direction in one click.
Is this British thermal unit to kilocalorie converter accurate?
Yes. It uses internationally defined SI conversion factors, as maintained by the BIPM, and all math runs in your browser so nothing is rounded away on a server. For everyday use the displayed precision is more than enough.