Calories to Joules Converter
Convert calories to joules instantly. One calorie equals 4.184 joules, so you can type any value in cal and read the answer in J. The page also…
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Convert calories to joules instantly. One calorie equals 4.184 joules, so you can type any value in cal and read the answer in J. The page also shows a conversion table and the exact formula used.
Worked example
Example calculated from the starting values. Enter your own values and press Calculate to get your result.
1 cal = 4.184 J
With the default inputs (value in calories = 1 cal), the results are: joules 4.184 J.
Calories to joules conversion table
Reference table based on the example values; it is not your calculation result.
| calories (cal) | joules (J) |
|---|---|
| 1 | 4.184 |
| 2 | 8.368 |
| 5 | 20.92 |
| 10 | 41.84 |
| 25 | 104.6 |
| 50 | 209.2 |
| 100 | 418.4 |
| 500 | 2,092 |
| 1,000 | 4,184 |
Frequently asked questions
How many joules are in one calorie?
1 calorie = 4.184 joules.
What is the formula to convert calories to joules?
Multiply the value in calories by 4.184.
How do I convert joules back to calories?
1 joule = 0.239006 calories.
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