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How many calories in 1 kJ?
The answer is 238.902957619.
We assume you are converting between calorie [15 °C] and kilojoule.
You can view more details on each measurement unit:
calories or kJ
The SI derived unit for energy is the joule.
1 joule is equal to 0.238902957619 calories, or 0.001 kJ.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between calories and kilojoules.
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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.
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).
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