⚡ Energy
joules to kcal Converter
Convert joules to kcal instantly with a reference conversion table.
Quick answer: To convert joules to kcal, multiply by 0.000239006. For example, 1 joules = 0.000239006 kcal. Use the calculator below for any value.
joules to kcal
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Common conversions
| joules | kcal |
|---|
Formula:
How to convert joules to kcal
1
Enter your value
Type the number of joules 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 joules. Your current value carries across so you don't have to re-enter anything.
3
About joules and kcal
joules and kcal are common energy measurements.
📊 Common conversions at a glance
| joules | kcal |
|---|---|
| 1 | 0.000239 |
| 100 | 0.0239 |
| 500 | 0.1195 |
| 1000 | 0.239 |
| 4184 | 1 |
| 10000 | 2.39 |
Reviewed for 2026. joules ↔ 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.