Calorie to Joule (cal to J)
Convert cal to J — Energy converter
One calorie equals 4.184 J, so to convert calories to joules you multiply the value by 4.184. A calorie is larger than a joule — going the other way, 1 J = 0.23900574 cal. For example, 10 cal = 41.84 J and 50 cal = 209.2 J.
4.184Click to copy
1 cal = 4.184 J
Calorie to Joule formula
1 Calorie = 4.184 J
Worked examples
- 25 cal = 104.6 J
- 100 cal = 418.4 J
Calorie to Joule conversion table
| Calorie (cal) | Joule (J) |
|---|---|
| 1 | 4.184 |
| 2 | 8.368 |
| 3 | 12.552 |
| 5 | 20.92 |
| 8 | 33.472 |
| 10 | 41.84 |
| 12 | 50.208 |
| 15 | 62.76 |
| 20 | 83.68 |
| 25 | 104.6 |
| 50 | 209.2 |
| 100 | 418.4 |
| 250 | 1046 |
| 500 | 2092 |
| 1000 | 4184 |
Frequently asked questions
How many joules are in one calorie?
One calorie equals 4.184 joules (J).
How many calories are in one joule?
One joule equals 0.23900574 calories (cal).
How do you convert calories to joules?
1 Calorie = 4.184 J. Use the calculator above for any value.
What is 5 cal in J?
5 cal = 20.92 J.
What is 100 cal in J?
100 cal = 418.4 J.
What is 10 cal in J?
10 cal = 41.84 J.
What is 20 cal in J?
20 cal = 83.68 J.
Is a calorie bigger than a joule?
Yes. A calorie is larger — one calorie equals 4.184 joules (J).