Calories to Joules Converter
Convert cal to J instantly. 1 cal = 4.184 J.
Conversion Formula
J = cal × 4.184
Example
25 cal × 4.184 = 104.6 J
Convert the other way: Joules to Calories →
Calories to Joules Conversion Table
| Calories (cal) | Joules (J) |
|---|---|
| 0.1 | 0.4184 |
| 0.5 | 2.092 |
| 1 | 4.184 |
| 2 | 8.368 |
| 5 | 20.92 |
| 10 | 41.84 |
| 20 | 83.68 |
| 25 | 104.6 |
| 50 | 209.2 |
| 100 | 418.4 |
| 500 | 2,092 |
| 1,000 | 4,184 |
About These Units
- Calories (cal)
- The thermochemical calorie, exactly 4.184 J, roughly the energy that warms 1 g of water by 1 °C. Chemistry texts use this small calorie, which is one thousandth of the food Calorie on labels.
- 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 cal?
1 cal equals 4.184 J.
How do I convert Calories to Joules?
Multiply your Calories value by 4.184. For example, 25 cal × 4.184 = 104.6 J.
How many cal are in 1 J?
1 J equals 0.2390057361 cal.