## ››Convert horsepower hour to gigajoule

 horsepower hour gigajoule

How many horsepower hour in 1 gigajoule? The answer is 372.50614122937.
We assume you are converting between horsepower hour and gigajoule.
You can view more details on each measurement unit:
horsepower hour or gigajoule
The SI derived unit for energy is the joule.
1 joule is equal to 3.7250614122937E-7 horsepower 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 horsepower hours and gigajoules.
Type in your own numbers in the form to convert the units!

## ››Quick conversion chart of horsepower hour to gigajoule

1 horsepower hour to gigajoule = 0.00268 gigajoule

10 horsepower hour to gigajoule = 0.02685 gigajoule

50 horsepower hour to gigajoule = 0.13423 gigajoule

100 horsepower hour to gigajoule = 0.26845 gigajoule

200 horsepower hour to gigajoule = 0.5369 gigajoule

500 horsepower hour to gigajoule = 1.34226 gigajoule

1000 horsepower hour to gigajoule = 2.68452 gigajoule

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You can do the reverse unit conversion from gigajoule to horsepower hour, or enter any two units below:

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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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