## ››Convert kilojoule to gigajoule

 kilojoules gigajoule

How many kilojoules in 1 gigajoule? The answer is 1000000.
We assume you are converting between kilojoule and gigajoule.
You can view more details on each measurement unit:
kilojoules or gigajoule
The SI derived unit for energy is the joule.
1 joule is equal to 0.001 kilojoules, or 1.0E-9 gigajoule.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between kilojoules and gigajoules.
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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: Gigajoule

The SI prefix "giga" represents a factor of 109, or in exponential notation, 1E9.

So 1 gigajoule = 109 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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