Convert British thermal unit (IT) to Calorie (thermochemical)
1 British thermal unit (IT) = 252.1644 Calorie (thermochemical) · 1 Calorie (thermochemical) = 0.00396567 British thermal unit (IT)
Conversion formula
1 BTU = 252.1644007 cal → BTU = 252.1644 cal
The reverse direction: 1 cal = 0.003965666831 BTU.
Quick reference
| BTU | cal |
|---|---|
| 1 BTU | 252.1644 cal |
| 2 BTU | 504.3288 cal |
| 3 BTU | 756.4932 cal |
| 5 BTU | 1,261 cal |
| 10 BTU | 2,522 cal |
| 20 BTU | 5,043 cal |
| 25 BTU | 6,304 cal |
| 50 BTU | 12,608 cal |
| 100 BTU | 25,216 cal |
| 250 BTU | 63,041 cal |
| 500 BTU | 126,082 cal |
| 1,000 BTU | 252,164 cal |
About these units
The British thermal unit (IT) (BTU) and the Calorie (thermochemical) (cal) are both units of energy. Under the standard definition, one BTU equals exactly 252.1644 cal. This category's SI base unit is the joule.