⚡ Energy
kcal to joules Converter
Convert kcal to joules instantly with a reference conversion table.
Quick answer: To convert kcal to joules, multiply by 4184. For example, 1 kcal = 4184 joules. Use the calculator below for any value.
kcal to joules
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Common conversions
| kcal | joules |
|---|
Formula:
How to convert kcal to joules
1
Enter your value
Type the number of kcal you want to convert into the left box. The result in joules 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 — joules to kcal. Your current value carries across so you don't have to re-enter anything.
3
About kcal and joules
kcal and joules are common energy measurements.
📊 Common conversions at a glance
| kcal | joules |
|---|---|
| 0.000239 | 1 |
| 0.001 | 4.184 |
| 0.01 | 41.84 |
| 0.1 | 418.4 |
| 1 | 4184 |
| 5 | 2.092e+04 |
Reviewed for 2026. kcal ↔ joules 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.
Frequently asked questions
How do I convert kcal to joules?
To convert kcal to joules, multiply by 4184. Or use the calculator above for instant results.
How many joules are in 1 kcal?
1 kcal equals 4184 joules.
Is the kcal to joules converter free?
Yes, the kcal to joules converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.