⚡ Energy
kJ to kcal Converter
Convert kJ to kcal instantly with a reference conversion table.
Quick answer: To convert kJ to kcal, multiply by 0.239006. For example, 1 kJ = 0.239006 kcal. Use the calculator below for any value.
kJ to kcal
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Common conversions
| kJ | kcal |
|---|
Formula:
How to convert kJ to kcal
1
Enter your value
Type the number of kj you want to convert into the left box. The result in kcal appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — kcal to kJ. Your current value carries across so you don't have to re-enter anything.
3
About kJ and kcal
kJ and kcal are common energy measurements.
💡 Did you know?
Divide kJ by 4.184 to get kcal. A 2,000 kcal daily intake = 8,368 kJ — a useful number to remember when reading EU food labels.
📊 Common conversions at a glance
| kJ | kcal |
|---|---|
| 4.184 | 1 |
| 100 | 23.9 |
| 200 | 47.8 |
| 500 | 119.5 |
| 1000 | 239 |
| 2000 | 478 |
Reviewed for 2026. kJ ↔ kcal conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.