Calories to Megajoules Converter
Convert calories (cal) to megajoules (MJ)
Result
0.000004184 MJ
Megajoules
1 cal = 0.000004184 MJ
1 cal in other units
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- 3Read the resultSee it in every other unit too
How to convert calories to megajoules
One calorie equals 0.000004184 megajoules, so multiply the number of calories by 0.000004184.
MJ = cal × 0.000004184
1 cal = 0.000004184 MJ · 1 MJ = 2,39,005.7 cal
Worked example
To convert 5 calories to megajoules: 5 cal × 0.000004184 = 0.00002092 MJ.
About calories (cal)
A (small) calorie is 4.184 J, the energy to warm 1 g of water by 1 °C. Food “Calories” are actually kilocalories.
About megajoules (MJ)
A megajoule is 1,000,000 J, used for fuel energy content.
More conversions
Calories to other units
Frequently asked questions
How many megajoules are in one calorie?
One calorie equals 0.000004184 megajoules.
How many calories are in one megajoule?
One megajoule equals 2,39,005.7 calories.
How do I convert calories to megajoules?
Use the formula MJ = cal × 0.000004184. For example, 5 cal × 0.000004184 = 0.00002092 MJ.