Joules to Kilocalories Converter
How to convert joules to kilocalories
kilocalories = joules ÷ 4,184
To convert joules to kilocalories, divide the number of joules by 4,184.
1 J = 0.000239005736 kcal
Examples
- 1,000 J ÷ 4,184 = 0.239005736 kcal
- One kilocalorie: 4,184 J ÷ 4,184 = 1 kcal
Good to know
The kilocalorie is the food "Calorie" (capital C) shown on nutrition labels. It is based here on the thermochemical calorie, so 1 kcal is exactly 4.184 kJ.
Joules to kilocalories conversion table
| Joules (J) | Kilocalories (kcal) |
|---|---|
| 1 J | 0.000239005736 kcal |
| 2 J | 0.000478011472 kcal |
| 5 J | 0.00119502868 kcal |
| 10 J | 0.00239005736 kcal |
| 20 J | 0.00478011472 kcal |
| 50 J | 0.0119502868 kcal |
| 100 J | 0.0239005736 kcal |
| 200 J | 0.0478011472 kcal |
| 250 J | 0.059751434 kcal |
| 500 J | 0.119502868 kcal |
| 1,000 J | 0.239005736 kcal |
| 2,000 J | 0.478011472 kcal |
| 2,500 J | 0.59751434 kcal |
| 5,000 J | 1.19502868 kcal |
| 10,000 J | 2.39005736 kcal |
Unit definitions
- Joule (J)
- The joule is the SI unit of energy, equal to the work done by a force of one newton over one meter, or one watt for one second.
- Kilocalorie (kcal)
- A kilocalorie is 1000 calories, exactly 4184 joules using the thermochemical calorie. It is the unit of food energy on nutrition labels.