Convert kilocalorie to megajoule
Here you can quickly calculate how many megajoule fit in one kilocalorie.
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- 1 kcal = 0.004184 MJ
- 1 MJ = 239.005736 kcal
Example: kilocalorie to megajoule
- 1 kilocalorie = 0.004184 megajoule
Kilocalorie to megajoule conversion table
| kilocalorie | megajoule |
|---|---|
| 1 | 0.004184 |
| 2 | 0.008368 |
| 5 | 0.02092 |
| 10 | 0.04184 |
| 20 | 0.08368 |
| 50 | 0.2092 |
| 100 | 0.4184 |
Kilocalorie to megajoule formula
To convert kilocalorie to megajoule, multiply by 0.004184.
1 kcal = 0.004184 MJ
Example: 1 kilocalorie = 0.004184 megajoule
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 kilocalorie and megajoule conversion quiz
Score:
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49 kilocalorie equals 0.205 megajoule.
Correct answer: 49 kilocalorie = 0.205 megajoule.
242 megajoule equals 5.78e+4 kilocalorie.
Correct answer: 242 megajoule = 5.78e+4 kilocalorie.
11.4 megajoule equals 2.72e+3 kilocalorie.
Correct answer: 11.4 megajoule = 2.72e+3 kilocalorie.
1.9 megajoule equals 681 kilocalorie.
Correct answer: 1.9 megajoule = 454 kilocalorie.