Convert calorie to kilojoule
Here you can quickly calculate how many kilojoule fit in one calorie.
Only numbers, with a single decimal separator.
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- scroll: formula · table · questions -
- 1 cal = 0.004184 kJ
- 1 kJ = 239.005736 cal
Example: calorie to kilojoule
- 1 calorie = 0.004184 kilojoule
Calorie to kilojoule conversion table
| calorie | kilojoule |
|---|---|
| 1 | 0.004184 |
| 2 | 0.008368 |
| 5 | 0.02092 |
| 10 | 0.04184 |
| 20 | 0.08368 |
| 50 | 0.2092 |
| 100 | 0.4184 |
Calorie to kilojoule formula
To convert calorie to kilojoule, multiply by 0.004184.
1 cal = 0.004184 kJ
Example: 1 calorie = 0.004184 kilojoule
Common energy conversion mistakes
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Food 'calories' are actually kilocalories: 1 kcal = 1,000 cal. A '500-calorie' meal therefore contains 500 kcal, half a million small calories. Labels write the same thing as 'kcal' or as 'Cal' with a capital C.
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The relationship is exact: 1 kWh = 3.6 MJ (3,600 kJ, because an hour has 3,600 seconds). The common slip is dividing when you should multiply: 10 kWh is 36 MJ, not 2.8. Remember the direction: kWh → MJ means times 3.6.
Quick calorie and kilojoule conversion quiz
Score:
0
161 calorie equals 1.01 kilojoule.
Correct answer: 161 calorie = 0.674 kilojoule.
170 kilojoule equals 24 400 calorie.
Correct answer: 170 kilojoule = 40 600 calorie.
175 kilojoule equals 83 700 calorie.
Correct answer: 175 kilojoule = 41 800 calorie.
9.6 kilojoule equals 2 290 calorie.
Correct answer: 9.6 kilojoule = 2 290 calorie.