Calories to Joules Converter
Convert calories (cal) to joules (J). Type a number in either box and the result appears as you type.
Enter a number, for example 12.5
1 calorie = 4.184 joules
Formula: J = cal × 4.184
How to convert calories to joules
1 calorie = 4.184 joules
To convert calories to joules, multiply the value by 4.184.
Example: 5 cal × 4.184 = 20.92 J
Calories to Joules conversion table
| Calorie (cal) | Joule (J) |
|---|---|
| 1 | 4.184 |
| 2 | 8.368 |
| 3 | 12.552 |
| 4 | 16.736 |
| 5 | 20.92 |
| 10 | 41.84 |
| 15 | 62.76 |
| 20 | 83.68 |
| 25 | 104.6 |
| 50 | 209.2 |
| 75 | 313.8 |
| 100 | 418.4 |
| 250 | 1,046 |
| 500 | 2,092 |
| 1,000 | 4,184 |
About calories and joules
Calorie (cal)
Exactly 4.184 joules (the thermochemical calorie). The food Calorie is actually a kilocalorie.
Joule (J)
The SI unit of energy, the work done by a force of one newton over one meter.
Frequently asked questions
What is 1 cal in joules?
1 cal = 4.184 J.
What is 1 J in calories?
1 J = 0.2390057361 cal.
How do I convert calories to joules?
To convert calories to joules, multiply the value by 4.184. 1 calorie = 4.184 joules.