# ››Convert kilojoule to calorie [nutritional]

 kilojoules calorie [nutritional]

How many kilojoules in 1 calorie [nutritional]? The answer is 4.1868.
We assume you are converting between kilojoule and calorie [nutritional].
You can view more details on each measurement unit:
kilojoules or calorie [nutritional]
The SI derived unit for energy is the joule.
1 joule is equal to 0.001 kilojoules, or 0.000238845896627 calorie [nutritional].
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between kilojoules and calories.
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# ››Definition: Kilojoule

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).

# ››Definition: Calorie

A calorie refers to a non-SI unit of energy. There are two common but different meanings: one is used in food and nutrition, the other was formerly widely used in chemistry, and a food calorie represents 1000 chemistry calories. The food calorie is sometimes capitalized as Calorie to distinguish it from the chemistry calorie; however, this capitalization is rarely observed in practice.

# ››Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!