How many joules in 1 kilojoules?
The answer is 1000.

We assume you are converting between **joule** and **kilojoule**.

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joules or
kilojoules

The SI derived unit for **energy** is the joule.

1 joule is equal to 0.001 kilojoules.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between joules and kilojoules.

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You can do the reverse unit conversion from kilojoules to joules, or enter any two units below:

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).

The SI prefix "kilo" represents a factor of
10^{3}, or in exponential notation, 1E3.

So 1 kilojoule = 10^{3} 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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