British thermal units (IT) to Kilojoules
Convert british thermal units (it) to kilojoules (BTU to kJ). 1 BTU = 1.05505585262 kJ. Use the calculator, formula and conversion table.
How to convert british thermal units (it) to kilojoules
Multiply the amount in british thermal units (it) by 1.05505585262 to get kilojoules. The displayed factor and results are rounded to 12 significant digits.
kJ = BTU × 1.05505585262Worked example
1 BTU = 1.05505585262 kJ. 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 Kilojoules table
| British thermal units (IT) (BTU) | Kilojoules (kJ) |
|---|---|
| 0 | 0 |
| 1 | 1.05505585262 |
| 5 | 5.2752792631 |
| 10 | 10.5505585262 |
| 25 | 26.3763963155 |
| 100 | 105.505585262 |
| 1,000 | 1,055.05585262 |
About this conversion
What is the formula for british thermal units (it) to kilojoules?
kJ = BTU × 1.05505585262. Multiply the amount in british thermal units (it) by 1.05505585262 to get kilojoules. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to british thermal units (it)?
Use the kilojoules 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.