Convert Calorie (thermochemical) to British thermal unit (IT)
1 Calorie (thermochemical) = 0.00396567 British thermal unit (IT) · 1 British thermal unit (IT) = 252.1644 Calorie (thermochemical)
Conversion formula
1 cal = 0.003965666831 BTU → cal = 0.00396567 BTU
The reverse direction: 1 BTU = 252.1644007 cal.
Quick reference
| cal | BTU |
|---|---|
| 1 cal | 0.00396567 BTU |
| 2 cal | 0.00793133 BTU |
| 3 cal | 0.011897 BTU |
| 5 cal | 0.0198283 BTU |
| 10 cal | 0.0396567 BTU |
| 20 cal | 0.0793133 BTU |
| 25 cal | 0.0991417 BTU |
| 50 cal | 0.198283 BTU |
| 100 cal | 0.396567 BTU |
| 250 cal | 0.991417 BTU |
| 500 cal | 1.9828334 BTU |
| 1,000 cal | 3.9656668 BTU |
About these units
The Calorie (thermochemical) (cal) and the British thermal unit (IT) (BTU) are both units of energy. Under the standard definition, one cal equals exactly 0.00396567 BTU. This category's SI base unit is the joule.