kJ to kcal Converter
Convert kilojoules to kilocalories and back, the two energy units used on food labels around the world.
Independently verified for accuracy
Calculator by Toolsloft ↗- Result
- 0.239006 Kilocalories (kcal)
- Conversion
- 1 Kilojoules (kJ) = 0.239006 Kilocalories (kcal)
Convert kilojoules to kilocalories, the two ways food energy is printed on nutrition labels. Enter the kilojoules from a label and read the Calories, or swap the direction to go the other way.
How this is calculated
Food energy uses the thermochemical calorie, where one kilocalorie equals exactly 4.184 kilojoules. Kilojoules are divided by 4.184 to get kilocalories, and kilocalories are multiplied by 4.184 to get kilojoules.
How to use
- Enter the number of kilojoules from the label.
- Keep the direction on kJ to kcal, or press Swap for kcal to kJ.
- Read the result in kilocalories.
Examples
- Label energy:
2000 kJ = 478.011472 kcal - One kilocalorie:
1 kcal = 4.184 kJ - Snack:
850 kJ = 203.154876 kcal
FAQ
- How do I convert kJ to kcal?
- Divide the kilojoules by 4.184. For example, 2000 kJ is about 478 kcal.
- Why do labels show both kJ and kcal?
- Many countries require energy in kilojoules, while kilocalories (Calories) are more familiar to a lot of readers, so labels often print both.