Thermochemical kilocalories to Kilojoules
Convert thermochemical kilocalories to kilojoules (kcal to kJ). 1 kcal = 4.184 kJ. Use the calculator, formula and conversion table.
How to convert thermochemical kilocalories to kilojoules
Multiply the amount in thermochemical kilocalories by 4.184 to get kilojoules. The displayed factor and results are rounded to 12 significant digits.
kJ = kcal × 4.184Worked example
1 kcal = 4.184 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.
Thermochemical kilocalories to Kilojoules table
| Thermochemical kilocalories (kcal) | Kilojoules (kJ) |
|---|---|
| 0 | 0 |
| 1 | 4.184 |
| 5 | 20.92 |
| 10 | 41.84 |
| 25 | 104.6 |
| 100 | 418.4 |
| 1,000 | 4,184 |
About this conversion
What is the formula for thermochemical kilocalories to kilojoules?
kJ = kcal × 4.184. Multiply the amount in thermochemical kilocalories by 4.184 to get kilojoules. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to thermochemical kilocalories?
Use the kilojoules to thermochemical kilocalories 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.