## ››Convert hectowatt hour to gigajoule

 hectowatt-hour gigajoule

## ››More information from the unit converter

How many hectowatt-hour in 1 gigajoule? The answer is 2777.7777777778.
We assume you are converting between hectowatt hour and gigajoule.
You can view more details on each measurement unit:
hectowatt-hour or gigajoule
The SI derived unit for energy is the joule.
1 joule is equal to 2.7777777777778E-6 hectowatt-hour, 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 hectowatt hours and gigajoules.
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## ››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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