Kilocalories to British thermal units converter
British thermal units (BTU)
1 kilocalorie = 3.965666831 British thermal units
How to convert kilocalories to British thermal units
BTU = kcal × 3.96566683139
Multiply the number of kilocalories by 3.96566683139 to get British thermal units. Going the other way, divide by 3.96566683139 (or multiply by 0.252164400722).
One kilocalorie is exactly defined as 3.96566683139 British thermal units (to 12 significant figures), and one British thermal unit is 0.252164400722 kilocalories.
Worked examples
- Convert 5 kilocalories: 5 × 3.96566683139 = 19.82833416 19.82833416 British thermal units.
- Convert 12.5 kilocalories: 12.5 × 3.96566683139 = 49.57083539 49.57083539 British thermal units.
- Convert 250 kilocalories: 250 × 3.96566683139 = 991.4167078 991.4167078 British thermal units.
Quick-reference table
| kcal | BTU |
|---|---|
| 1 | 3.965666831 |
| 2 | 7.931333663 |
| 3 | 11.89700049 |
| 5 | 19.82833416 |
| 10 | 39.65666831 |
| 15 | 59.48500247 |
| 20 | 79.31333663 |
| 25 | 99.14167078 |
| 50 | 198.2833416 |
| 75 | 297.4250124 |
| 100 | 396.5666831 |
| 1,000 | 3,965.666831 |
| BTU | kcal |
|---|---|
| 1 | 0.2521644007 |
| 2 | 0.5043288014 |
| 3 | 0.7564932022 |
| 5 | 1.260822004 |
| 10 | 2.521644007 |
| 15 | 3.782466011 |
| 20 | 5.043288014 |
| 25 | 6.304110018 |
| 50 | 12.60822004 |
| 75 | 18.91233005 |
| 100 | 25.21644007 |
| 1,000 | 252.1644007 |
Related conversions
Frequently asked questions
How many British thermal units are in 1 kilocalorie?
1 kilocalorie equals 3.965666831 British thermal units.
What is the formula to convert kilocalories to British thermal units?
Use BTU = kcal × 3.96566683139. Multiply the number of kilocalories by 3.96566683139 to get British thermal units. Going the other way, divide by 3.96566683139 (or multiply by 0.252164400722).
What is 100 kilocalories in British thermal units?
100 kilocalories is 396.5666831 British thermal units.