How to convert joules to calories
Formula: cal = J ÷ 4.184
Worked example: 1,000 J → 1,000 ÷ 4.184 = 239.006 cal
Joules to calories conversion chart
| Joules (J) | Calories (cal) |
|---|---|
| 1 J | 0.239006 cal |
| 2 J | 0.478011 cal |
| 3 J | 0.717017 cal |
| 4 J | 0.956023 cal |
| 5 J | 1.19503 cal |
| 6 J | 1.43403 cal |
| 7 J | 1.67304 cal |
| 8 J | 1.91205 cal |
| 9 J | 2.15105 cal |
| 10 J | 2.39006 cal |
| 12 J | 2.86807 cal |
| 15 J | 3.58509 cal |
| 20 J | 4.78011 cal |
| 25 J | 5.97514 cal |
| 30 J | 7.17017 cal |
| 40 J | 9.56023 cal |
| 50 J | 11.9503 cal |
| 75 J | 17.9254 cal |
| 100 J | 23.9006 cal |
| 250 J | 59.7514 cal |
| 500 J | 119.503 cal |
| 1,000 J | 239.006 cal |
What is a joule?
The joule is the SI unit of energy: the work done by a force of one newton over one meter, or one watt for one second. It is small; lifting an apple about one meter takes roughly one joule.
What is a calorie?
The small calorie, 4.184 joules, is the energy that warms one gram of water by one degree Celsius. In nutrition, the word Calorie with a capital C, as on US food labels, actually means a kilocalorie, 1,000 times more.