ACCURATE CONVERSION
British thermal units to Calories Converter
Convert British thermal units (BTU) to calories (cal) with a standards-based formula.
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How to convert British thermal units to calories
Enter a value in the converter above. The result updates immediately using the relationship below.
FORMULA1 British thermal unit = 252.16440072 calories
British thermal units to Calories conversion table
| British thermal units (BTU) | Calories (cal) |
|---|---|
| 1 | 252.16440072 |
| 5 | 1,260.82200361 |
| 10 | 2,521.64400722 |
| 20 | 5,043.28801444 |
| 50 | 12,608.22003609 |
| 100 | 25,216.44007218 |
Common values
For a quick estimate, multiply by the factor above. Use more decimal places when technical work requires additional precision.
Frequently asked questions
How many calories are in one British thermal unit?
One British thermal unit equals 252.16440072 calories.
How do you convert British thermal units to calories?
Multiply the British thermal unit value by 252.16440072.
Can I convert calories back to British thermal units?
Yes. One calorie equals 0.00396567 British thermal units; you can also use the swap button.