How to convert joules to calories
cal = J × 0.2390057361
Example: 5 J × 0.2390057361 = 1.195028681 cal
Joules to Calories table
| Joules (J) | Calories (cal) |
|---|---|
| 0.5 J | 0.11950287 cal |
| 1 J | 0.23900574 cal |
| 2 J | 0.47801147 cal |
| 3 J | 0.71701721 cal |
| 4 J | 0.95602294 cal |
| 5 J | 1.1950287 cal |
| 6 J | 1.4340344 cal |
| 7 J | 1.6730402 cal |
| 8 J | 1.9120459 cal |
| 9 J | 2.1510516 cal |
| 10 J | 2.3900574 cal |
| 15 J | 3.585086 cal |
| 20 J | 4.7801147 cal |
| 25 J | 5.9751434 cal |
| 30 J | 7.1701721 cal |
| 40 J | 9.5602294 cal |
| 50 J | 11.950287 cal |
| 75 J | 17.92543 cal |
| 100 J | 23.900574 cal |
| 250 J | 59.751434 cal |
| 500 J | 119.50287 cal |
| 1,000 J | 239.00574 cal |
About these units
Joules (J): The joule is the SI unit of energy: the work done by a force of one newton over one metre.
Calories (cal): The thermochemical calorie is exactly 4.184 joules. 1,000 of these make one food Calorie (kcal).
Frequently asked questions
How many calories are in 1 joule?
1 joule equals 0.2390057361 calories.
How do I convert J to cal?
Multiply the value in joules by 0.2390057361. For example, 5 J × 0.2390057361 = 1.195028681 cal.
How do I convert calories back to joules?
Multiply by 4.184 (or divide by 0.2390057361). 1 cal = 4.184 J.
What is a joule?
The joule is the SI unit of energy: the work done by a force of one newton over one metre.
Conversion factors come from exact international definitions (NIST SP 811, BIPM) where they exist. Results show up to 10 significant digits. Need every energy unit at once? Use the Energy Converter.