British thermal units (IT) to Thermochemical calories
Convert british thermal units (it) to thermochemical calories (BTU to cal). 1 BTU = 252.164400722 cal. Use the calculator, formula and conversion table.
How to convert british thermal units (it) to thermochemical calories
Multiply the amount in british thermal units (it) by 252.164400722 to get thermochemical calories. The displayed factor and results are rounded to 12 significant digits.
cal = BTU × 252.164400722Worked example
1 BTU = 252.164400722 cal. Change the amount in the calculator above to use your own value.
Units and assumptions
A watt-hour is 3,600 joules. Calories use the thermochemical definition (4.184 J); BTU uses the International Table definition.
Calculator results use floating-point arithmetic and are rounded for display. The reference table below uses up to 12 significant digits.
British thermal units (IT) to Thermochemical calories table
| British thermal units (IT) (BTU) | Thermochemical calories (cal) |
|---|---|
| 0 | 0 |
| 1 | 252.164400722 |
| 5 | 1,260.82200361 |
| 10 | 2,521.64400722 |
| 25 | 6,304.11001804 |
| 100 | 25,216.4400722 |
| 1,000 | 252,164.400722 |
About this conversion
What is the formula for british thermal units (it) to thermochemical calories?
cal = BTU × 252.164400722. Multiply the amount in british thermal units (it) by 252.164400722 to get thermochemical calories. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to british thermal units (it)?
Use the thermochemical calories to british thermal units (it) calculator to reverse this conversion. You can also use Swap units in the calculator above.
Can I use a different pair of units?
Choose another unit in the calculator, or open the energy converter to browse all supported pairs.