calories to joules converter
1 cal = 4.184 J (thermochemical); 1 J = 0.239006 cal. To convert calories to joules, multiply by 4.184.
Conversion formula
J = cal × 4.184
Conversion table
| 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 |
| 50 cal | 209.2 J |
| 100 cal | 418.4 J |
| 1000 cal | 4184 J |
Reverse conversion table
| 1 J | 0.239006 cal |
|---|---|
| 2 J | 0.478012 cal |
| 3 J | 0.717018 cal |
| 4 J | 0.956024 cal |
| 5 J | 1.19503 cal |
| 6 J | 1.43404 cal |
| 7 J | 1.67304 cal |
| 8 J | 1.91205 cal |
| 9 J | 2.15105 cal |
| 10 J | 2.39006 cal |
| 15 J | 3.58509 cal |
| 20 J | 4.78012 cal |
| 25 J | 5.97515 cal |
| 50 J | 11.9503 cal |
| 100 J | 23.9006 cal |
| 1000 J | 239.006 cal |
Key facts
| 1 calorie | 4.184 J (thermochemical) |
|---|---|
| 1 joule | 0.239006 cal |
| 1 cal (IT) | 4.1868 J |
| Formula | J = cal × 4.184 |
Frequently asked questions
How many joules is 1 calorie?
1 thermochemical calorie equals 4.184 J. The IT calorie is 4.1868 J.
How do I convert calories to joules?
Multiply calories by 4.184. For example, 500 cal = 2092 J.
Reverse conversion
Printable A4 conversion cheat sheet — see the Downloads page