Convert Calories to Joules
500 cal = 2,092 J
J = cal × 4.184Convert calories to joules instantly — type in either box and it works both ways.
How to convert calories to joules
To convert calories to joules, multiply the number of calories by 4.184.
J = cal × 4.184
Example: convert 500 cal to J
- 500 × 4.184 = 2,092
- 500 cal = 2,092 J
1 cal = 4.184 J and 1 J = 0.239006 cal.
Calories to Joules conversion chart
| Calories (cal) | Joules (J) |
|---|---|
| 1 cal | 4.184 J |
| 10 cal | 41.84 J |
| 50 cal | 209.2 J |
| 100 cal | 418.4 J |
| 200 cal | 836.8 J |
| 500 cal | 2,092 J |
| 1,000 cal | 4,184 J |
| 2,000 cal | 8,368 J |
| 2,500 cal | 10,460 J |
| 5,000 cal | 20,920 J |
Frequently asked questions
How do you convert calories to joules?
To convert calories to joules, multiply the number of calories by 4.184. The formula is J = cal × 4.184.
How many joules are in one calorie?
1 cal = 4.184 J.
How do I convert joules back to calories?
Use the reverse formula: cal = J ÷ 4.184. For example 1 J = 0.239006 cal.
Is this converter free and accurate?
Yes. It is free, uses exact internationally defined conversion factors, and runs in your browser — nothing you type is sent anywhere.
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