Convert kilocalorie to kilojoule
Here you can quickly calculate how many kilojoule fit in one kilocalorie.
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- 1 kcal = 4.184 kJ
- 1 kJ = 0.239006 kcal
Conversion from kilocalorie to kilojoule example
- 1 kilocalorie = 4.184 kilojoule
Kilocalorie to kilojoule conversion table
| kilocalorie | kilojoule |
|---|---|
| 1 | 4.184 |
| 2 | 8.368 |
| 5 | 20.92 |
| 10 | 41.84 |
| 20 | 83.68 |
| 50 | 209.2 |
| 100 | 418.4 |
Formula to convert kilocalorie to kilojoule
To convert kilocalorie to kilojoule, multiply by 4.184.
1 kcal = 4.184 kJ
Example: 1 kilocalorie = 4.184 kilojoule
Common 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 kilocalorie to/from kilojoule conversion quiz
Score:
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222 kilojoule equals 53.1 kilocalorie.
Correct answer: 222 kilojoule = 53.1 kilocalorie.
19.4 kilocalorie equals 69 kilojoule.
Correct answer: 19.4 kilocalorie = 81.2 kilojoule.
6.8 kilocalorie equals 28.5 kilojoule.
Correct answer: 6.8 kilocalorie = 28.5 kilojoule.
197 kilojoule equals 47.1 kilocalorie.
Correct answer: 197 kilojoule = 47.1 kilocalorie.
19.3 kilocalorie equals 80.8 kilojoule.
Correct answer: 19.3 kilocalorie = 80.8 kilojoule.