Convert calories to joules
Convert calories (cal) to joules (J). 1 cal = 4.184 J, and 1 J = 0.239006 cal.
Calories to Joules formula
J = cal × 4.184
Multiply the number of calories by 4.184.
Example: To convert 1 cal to joules: 1 × 4.184 = 4.184 J.
Quick answers
- What is 1 cal in joules?
- 1 cal = 4.184 J
- What is 1,000 cal in joules?
- 1,000 cal = 4,184 J
Calories to Joules conversion table
Joules to Calories table| calories (cal) | joules (J) |
|---|---|
| 1 cal | 4.184 J |
| 10 cal | 41.84 J |
| 100 cal | 418.4 J |
| 500 cal | 2,092 J |
| 1,000 cal | 4,184 J |
| 4,184 cal | 17,505.9 J |
| 10,000 cal | 41,840 J |
Frequently asked questions
How many joules are in a calorie?
There are 4.184 joules in a calorie (1 cal = 4.184 J).
How do I convert calories to joules?
Multiply the number of calories by 4.184. To convert 1 cal to joules: 1 × 4.184 = 4.184 J.
Is the Calories to Joules conversion exact?
Yes. Both units are defined exactly, so 1 calorie is exactly 4.184 joules. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.
What is 1 cal in joules?
1 cal = 4.184 J.
How do I convert joules back to calories?
Use the reverse relationship: 1 J = 0.239006 cal. The Joules to Calories page has a converter and a full table.
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