Convert Joule to Calorie
Convert Joule to Calorie instantly. 1 J = 0.239006 cal. Formula, worked examples and a quick reference table.
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One joule equals 0.239006 calorie. To convert any number of joules to calories, multiply by 0.23900574.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Joule to Calorie formula
calorie = joule × 0.23900574
To go the other way, use joule = calorie ÷ 0.23900574.
Joule to Calorie conversion table
| Joule | Calorie |
|---|---|
| 1 J | 0.239 cal |
| 2 J | 0.478 cal |
| 3 J | 0.717 cal |
| 5 J | 1.195 cal |
| 10 J | 2.3901 cal |
| 20 J | 4.7801 cal |
| 25 J | 5.9751 cal |
| 50 J | 11.9503 cal |
| 100 J | 23.9006 cal |
| 250 J | 59.7514 cal |
| 500 J | 119.5029 cal |
| 1,000 J | 239.0057 cal |
Frequently asked questions
How many calories are in a joule? +
There are 0.239006 calories in one joule.
What is 10 J in cal? +
10 J equals 2.3901 cal. Multiply 10 by 0.23900574.
How do I convert calorie back to joule? +
Use joule = calorie ÷ 0.23900574. The converter above handles both directions, or see our dedicated Calorie to Joule page.