Handy Units
Joules to CaloriesJ → cal
1 J = 0.239006 cal · 1 cal = 4.184 J
Formula
cal = J ÷ 4.184
Example: 100 J = 100 ÷ 4.184 = 23.9006 cal
These units differ only by a fixed factor: multiply by it to convert, divide to go back. The factors are exact international definitions (for example 1 inch = 2.54 cm exactly); results are rounded only for display.
Joules and Calories chart
| Joules (J) | Calories (cal) |
|---|---|
| 1 J | 0.239006 cal |
| 10 J | 2.39006 cal |
| 100 J | 23.9006 cal |
| 1,000 J | 239.006 cal |
| 4,184 J | 1,000 cal |
| Calories (cal) | Joules (J) |
|---|---|
| 1 cal | 4.184 J |
| 10 cal | 41.84 J |
| 100 cal | 418.4 J |
| 1,000 cal | 4,184 J |
About these units
Joule (J)Joules, the SI unit of energy.
Calorie (cal)The small calorie: 1 cal = 4.184 J, and 1,000 cal = 1 kcal.
Questions
How many Calories are in 1 Joules?
1 J = 0.239006 cal.
How many Joules are in 1 Calories?
1 cal = 4.184 J.