Calorie to Kilojoule (cal to kJ)
Convert cal to kJ — Energy converter
One calorie equals 0.004184 kJ, so to convert calories to kilojoules you multiply the value by 0.004184. A calorie is smaller than a kilojoule — going the other way, 1 kJ = 239.005736 cal. For example, 10 cal = 0.04184 kJ and 50 cal = 0.2092 kJ.
0.004184Click to copy
1 cal = 0.004184 kJ
Calorie to Kilojoule formula
1 Calorie = 0.004184 kJ
Worked examples
- 25 cal = 0.1046 kJ
- 100 cal = 0.4184 kJ
Calorie to Kilojoule conversion table
| Calorie (cal) | Kilojoule (kJ) |
|---|---|
| 1 | 0.004184 |
| 2 | 0.008368 |
| 3 | 0.012552 |
| 5 | 0.02092 |
| 8 | 0.033472 |
| 10 | 0.04184 |
| 12 | 0.050208 |
| 15 | 0.06276 |
| 20 | 0.08368 |
| 25 | 0.1046 |
| 50 | 0.2092 |
| 100 | 0.4184 |
| 250 | 1.046 |
| 500 | 2.092 |
| 1000 | 4.184 |
Frequently asked questions
How many kilojoules are in one calorie?
One calorie equals 0.004184 kilojoules (kJ).
How many calories are in one kilojoule?
One kilojoule equals 239.005736 calories (cal).
How do you convert calories to kilojoules?
1 Calorie = 0.004184 kJ. Use the calculator above for any value.
What is 5 cal in kJ?
5 cal = 0.02092 kJ.
What is 100 cal in kJ?
100 cal = 0.4184 kJ.
What is 10 cal in kJ?
10 cal = 0.04184 kJ.
What is 20 cal in kJ?
20 cal = 0.08368 kJ.
Is a calorie bigger than a kilojoule?
No. A calorie is smaller — one calorie equals 0.004184 kilojoules, while one kilojoule equals 239.005736 calories.