J to kcal
Convert Joule to Kilocalorie
Convert Joule to Kilocalorie instantly with the tool above. The conversion factor is 0.000239005736, meaning 1 joule equals 0.000239005736 kilocalories. 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 Joule = 0.000239005736 kilocalories
1 Kilocalorie = 4,184 joules
Quick reference
Common joules converted to kilocalories at a glance.
| J | kcal |
|---|---|
| 1 | 0.000239005736 |
| 2 | 0.000478011472 |
| 5 | 0.00119503 |
| 10 | 0.00239006 |
| 25 | 0.00597514 |
| 50 | 0.01195029 |
| 100 | 0.02390057 |
| 500 | 0.11950287 |
| 1,000 | 0.23900574 |
How to convert joules to kilocalories
To convert a value from joules to kilocalories, multiply the joule value by 0.000239005736 kilocalories. For example, 10 joules × that factor = 0.00239006 kilocalories.
This joule to kilocalorie 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 kilocalories are in 1 joule?+
1 joule is equal to 0.000239005736 kilocalories.
How do you convert joules to kilocalories?+
To convert joules to kilocalories, multiply the joule value by 0.000239005736. For example, 10 joules × 0.000239005736 = 0.00239006 kilocalories.
What is the formula to convert joules to kilocalories?+
Joule → Kilocalorie: value × 0.000239005736. Equivalently, 1 joule = 0.000239005736 kilocalories.
Is this Joule to Kilocalorie converter free to use?+
Yes. This joule to kilocalorie converter is completely free, works instantly in your browser, and contains no advertisements, popups or sign-up.