kcal to kJ
Convert Kilocalorie to Kilojoule
Convert Kilocalorie to Kilojoule instantly with the tool above. The conversion factor is 4.184, meaning 1 kilocalorie equals 4.184 kilojoules. Type any value and the result updates immediately — no ads, no page reloads, no clutter.
Type a number above. The result updates instantly — no buttons, no reloads.
1 Kilocalorie = 4.184 kilojoules
1 Kilojoule = 0.23900574 kilocalories
Quick reference
Common kilocalories converted to kilojoules at a glance.
| kcal | kJ |
|---|---|
| 1 | 4.184 |
| 2 | 8.368 |
| 5 | 20.92 |
| 10 | 41.84 |
| 25 | 104.6 |
| 50 | 209.2 |
| 100 | 418.4 |
| 500 | 2,092 |
| 1,000 | 4,184 |
How to convert kilocalories to kilojoules
To convert a value from kilocalories to kilojoules, multiply the kilocalorie value by 4.184 kilojoules. For example, 10 kilocalories × that factor = 41.84 kilojoules.
This kilocalorie to kilojoule converter runs entirely in your browser, so results appear instantly with no page reload, no advertisements and no sign-up.
Frequently asked questions
How many kilojoules are in 1 kilocalorie?+
1 kilocalorie is equal to 4.184 kilojoules.
How do you convert kilocalories to kilojoules?+
To convert kilocalories to kilojoules, multiply the kilocalorie value by 4.184. For example, 10 kilocalories × 4.184 = 41.84 kilojoules.
What is the formula to convert kilocalories to kilojoules?+
Kilocalorie → Kilojoule: value × 4.184. Equivalently, 1 kilocalorie = 4.184 kilojoules.
Is this Kilocalorie to Kilojoule converter free to use?+
Yes. This kilocalorie to kilojoule converter is completely free, works instantly in your browser, and contains no advertisements, popups or sign-up.