kcal to J
Convert Kilocalorie to Joule
Convert Kilocalorie to Joule instantly with the tool above. The conversion factor is 4,184, meaning 1 kilocalorie equals 4,184 joules. Type any value and the result updates immediately — no ads, no page reloads, no clutter.
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1 Kilocalorie = 4,184 joules
1 Joule = 0.000239005736 kilocalories
Quick reference
Common kilocalories converted to joules at a glance.
| kcal | J |
|---|---|
| 1 | 4,184 |
| 2 | 8,368 |
| 5 | 20,920 |
| 10 | 41,840 |
| 25 | 104,600 |
| 50 | 209,200 |
| 100 | 418,400 |
| 500 | 2,092,000 |
| 1,000 | 4,184,000 |
How to convert kilocalories to joules
To convert a value from kilocalories to joules, multiply the kilocalorie value by 4,184 joules. For example, 10 kilocalories × that factor = 41,840 joules.
This kilocalorie to joule 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 joules are in 1 kilocalorie?+
1 kilocalorie is equal to 4,184 joules.
How do you convert kilocalories to joules?+
To convert kilocalories to joules, multiply the kilocalorie value by 4,184. For example, 10 kilocalories × 4,184 = 41,840 joules.
What is the formula to convert kilocalories to joules?+
Kilocalorie → Joule: value × 4,184. Equivalently, 1 kilocalorie = 4,184 joules.
Is this Kilocalorie to Joule converter free to use?+
Yes. This kilocalorie to joule converter is completely free, works instantly in your browser, and contains no advertisements, popups or sign-up.