Convert calories to joules
Instantly convert calories to joules using our free online calculator. See the formula and a full reference table below.
1 calorie = 4.184 joules
Formula:
calories × 4.184 = joulesCalorie → Joule reference table
| calories | joules |
|---|---|
| 1 calorie | 4.184 joules |
| 2 calories | 8.368 joules |
| 5 calories | 20.92 joules |
| 10 calories | 41.84 joules |
| 25 calories | 104.6 joules |
| 50 calories | 209.2 joules |
| 100 calories | 418.4 joules |
| 250 calories | 1046 joules |
| 500 calories | 2092 joules |
| 1000 calories | 4184 joules |
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Frequently asked questions
How many joules are in 1 calorie?
1 calorie equals 4.184 joules.
What is the formula to convert calories to joules?
Multiply the number of calories by 4.184 to get the equivalent in joules.
Is this converter accurate?
Yes. All conversions use internationally recognized conversion factors with up to 6 decimal places of precision.