Kilocalories to Joules Converter
Convert kcal to J instantly. 1 kcal = 4,184 J.
Conversion Formula
J = kcal × 4,184
Example
25 kcal × 4,184 = 104,600 J
Convert the other way: Joules to Kilocalories →
Kilocalories to Joules Conversion Table
| Kilocalories (kcal) | Joules (J) |
|---|---|
| 0.1 | 418.4 |
| 0.5 | 2,092 |
| 1 | 4,184 |
| 2 | 8,368 |
| 5 | 20,920 |
| 10 | 41,840 |
| 20 | 83,680 |
| 25 | 104,600 |
| 50 | 209,200 |
| 100 | 418,400 |
| 500 | 2,092,000 |
| 1,000 | 4,184,000 |
About These Units
- 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.
- 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.
Frequently Asked Questions
How many J are in 1 kcal?
1 kcal equals 4,184 J.
How do I convert Kilocalories to Joules?
Multiply your Kilocalories value by 4,184. For example, 25 kcal × 4,184 = 104,600 J.
How many kcal are in 1 J?
1 J equals 0.000239005736 kcal.