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How many kj in 1 kcal?
The answer is 4.1858.
We assume you are converting between kilojoule and kilocalorie [15 °C].
You can view more details on each measurement unit:
kj or kcal
The SI derived unit for energy is the joule.
1 joule is equal to 0.001 kj, or 0.000238902957619 kcal.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between kilojoules and kilocalories.
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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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