J to cal
Convert Joule to Calorie
Convert Joule to Calorie instantly with the tool above. The conversion factor is 0.23900574, meaning 1 joule equals 0.23900574 calories. 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 = 0.23900574 calories
1 Calorie = 4.184 joules
Quick reference
Common joules converted to calories at a glance.
| J | cal |
|---|---|
| 1 | 0.23900574 |
| 2 | 0.47801147 |
| 5 | 1.19502868 |
| 10 | 2.39005736 |
| 25 | 5.9751434 |
| 50 | 11.95028681 |
| 100 | 23.90057361 |
| 500 | 119.50286807 |
| 1,000 | 239.00573614 |
How to convert joules to calories
To convert a value from joules to calories, multiply the joule value by 0.23900574 calories. For example, 10 joules × that factor = 2.39005736 calories.
This joule to calorie 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 calories are in 1 joule?+
1 joule is equal to 0.23900574 calories.
How do you convert joules to calories?+
To convert joules to calories, multiply the joule value by 0.23900574. For example, 10 joules × 0.23900574 = 2.39005736 calories.
What is the formula to convert joules to calories?+
Joule → Calorie: value × 0.23900574. Equivalently, 1 joule = 0.23900574 calories.
Is this Joule to Calorie converter free to use?+
Yes. This joule to calorie converter is completely free, works instantly in your browser, and contains no advertisements, popups or sign-up.