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How many kilojoules in 1 calorie?
The answer is 0.0041858.
We assume you are converting between kilojoule and calorie [15 °C].
You can view more details on each measurement unit:
kilojoules or calorie
The SI derived unit for energy is the joule.
1 joule is equal to 0.001 kilojoules, or 0.23890295761862 calorie.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between kilojoules and calories.
Type in your own numbers in the form to convert the units!
1 kilojoules to calorie = 238.90296 calorie
2 kilojoules to calorie = 477.80592 calorie
3 kilojoules to calorie = 716.70887 calorie
4 kilojoules to calorie = 955.61183 calorie
5 kilojoules to calorie = 1194.51479 calorie
6 kilojoules to calorie = 1433.41775 calorie
7 kilojoules to calorie = 1672.3207 calorie
8 kilojoules to calorie = 1911.22366 calorie
9 kilojoules to calorie = 2150.12662 calorie
10 kilojoules to calorie = 2389.02958 calorie
You can do the reverse unit conversion from calorie to kilojoules, or enter any two units below:
kilojoules to gram calorie
kilojoules to decijoule
kilojoules to microjoule
kilojoules to gigajoule
kilojoules to ton
kilojoules to gigaelectron volt
kilojoules to hectojoule
kilojoules to picojoule
kilojoules to erg
kilojoules to horsepower hour
The SI prefix "kilo" represents a factor of 103, or in exponential notation, 1E3.
So 1 kilojoule = 103 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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