How to convert calories to joules
One calorie equals 4.184 joules, so multiply the number of calories by 4.184. For example, 5 cal × 4.184 = 20.92 J.
Calories to joules table
| Calories (cal) | Joules (J) |
|---|---|
| 0.1 cal | 0.4184 J |
| 0.5 cal | 2.092 J |
| 1 cal | 4.184 J |
| 2 cal | 8.368 J |
| 3 cal | 12.552 J |
| 4 cal | 16.736 J |
| 5 cal | 20.92 J |
| 6 cal | 25.104 J |
| 7 cal | 29.288 J |
| 8 cal | 33.472 J |
| 9 cal | 37.656 J |
| 10 cal | 41.84 J |
| 15 cal | 62.76 J |
| 20 cal | 83.68 J |
| 25 cal | 104.6 J |
| 30 cal | 125.52 J |
| 50 cal | 209.2 J |
| 75 cal | 313.8 J |
| 100 cal | 418.4 J |
| 250 cal | 1,046 J |
| 500 cal | 2,092 J |
| 1,000 cal | 4,184 J |
Need it the other way? Use the joules to calories converter, or the unit converter for any other energy unit.
Questions
How many joules are in a calorie?
1 cal = 4.184 J.
How many calories are in a joule?
1 J = 0.2390057361 cal.
What is 10 cal in J?
10 cal = 41.84 J.