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How many megajoule in 1 calorie? The answer is 4.1858E-6. We assume you are converting between megajoule and calorie [15 °C]. You can view more details on each measurement unit: megajoule or calorie The SI derived unit for energy is the joule. 1 joule is equal to 1.0E-6 megajoule, or 0.23890295761862 calorie. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between megajoules and calories. Type in your own numbers in the form to convert the units!
1 megajoule to calorie = 238902.95762 calorie
2 megajoule to calorie = 477805.91524 calorie
3 megajoule to calorie = 716708.87286 calorie
4 megajoule to calorie = 955611.83047 calorie
5 megajoule to calorie = 1194514.78809 calorie
6 megajoule to calorie = 1433417.74571 calorie
7 megajoule to calorie = 1672320.70333 calorie
8 megajoule to calorie = 1911223.66095 calorie
9 megajoule to calorie = 2150126.61857 calorie
10 megajoule to calorie = 2389029.57619 calorie
You can do the reverse unit conversion from calorie to megajoule, or enter any two units below:
The SI prefix "mega" represents a factor of 106, or in exponential notation, 1E6.
So 1 megajoule = 106 joules.
The definition of a joule is as follows:
The joule (symbol J, also called newton meter, watt second, or coulomb volt) is the SI unit of energy and work. The unit is pronounced to rhyme with "tool", and is named in honor of the physicist James Prescott Joule (1818-1889).
15 °C calorie: the amount of energy required to warm 1 g of air-free water from 14.5 °C to 15.5 °C at a constant pressure of 101.325 kPa (1 atm). Experimental values of this calorie ranged from 4.1852 J to 4.1858 J. The CIPM in 1950 published a mean experimental value of 4.1855 J, noting an uncertainty of 0.0005 J.
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