Joules to Kilocalories Converter
Convert J to kcal instantly. 1 J = 0.000239005736 kcal.
Conversion Formula
kcal = J × 0.000239005736
Example
25 J × 0.000239005736 = 0.005975143403 kcal
Convert the other way: Kilocalories to Joules →
Joules to Kilocalories Conversion Table
| Joules (J) | Kilocalories (kcal) |
|---|---|
| 0.1 | 0.000023900574 |
| 0.5 | 0.000119502868 |
| 1 | 0.000239005736 |
| 2 | 0.000478011472 |
| 5 | 0.001195028681 |
| 10 | 0.002390057361 |
| 20 | 0.004780114723 |
| 25 | 0.005975143403 |
| 50 | 0.01195028681 |
| 100 | 0.02390057361 |
| 500 | 0.1195028681 |
| 1,000 | 0.2390057361 |
About These Units
- Joules (J)
- The SI derived unit of energy, the work done by a force of one newton over one meter, also equal to one watt-second. Physics and chemistry use it throughout, and it is named after James Prescott Joule.
- Kilocalories (kcal)
- Exactly 1,000 calories, or 4,184 J using the thermochemical calorie. This is the Calorie printed on US food labels, and it is the unit for daily diets and exercise energy estimates.
Frequently Asked Questions
How many kcal are in 1 J?
1 J equals 0.000239005736 kcal.
How do I convert Joules to Kilocalories?
Multiply your Joules value by 0.000239005736. For example, 25 J × 0.000239005736 = 0.005975143403 kcal.
How many J are in 1 kcal?
1 kcal equals 4,184 J.