Calories to British thermal units
1 cal = 0.0039656668 BTU
All units in this category
- 4.184J
- 0.004184kJ
- 0.000004184MJ
- 1cal
- 0.001kcal
- 0.0011622222Wh
- 0.0000011622222kWh
- 1.1622222E-9MWh
- 0.0039656668BTU
- 3.08596ft·lb
- 2.6114474E19eV
Formula
Multiply the value in calories by 0.0039656668 to get British thermal units.
BTU = cal × 0.0039656668
How to convert calories to British thermal units
Type a value in the field above and the result is calculated instantly. Use the arrow button to swap direction, or pick other units from the lists.
Calories to British thermal units – common values
| Calories (cal) | British thermal units (BTU) |
|---|---|
| 1 | 0.00396567 |
| 2 | 0.00793133 |
| 5 | 0.0198283 |
| 10 | 0.0396567 |
| 20 | 0.0793133 |
| 50 | 0.198283 |
| 100 | 0.396567 |
| 250 | 0.991417 |
| 500 | 1.98283 |
| 1,000 | 3.96567 |
About the units
Calories. A calorie is the energy needed to heat one gram of water by one degree. Food "calories" are actually kilocalories.
British thermal units. The British thermal unit is used in the US for heating and cooling systems.