## ››Convert gigajoule to horsepower hour

 gigajoule horsepower hour

How many gigajoule in 1 horsepower hour? The answer is 0.0026845195.
We assume you are converting between gigajoule and horsepower hour.
You can view more details on each measurement unit:
gigajoule or horsepower hour
The SI derived unit for energy is the joule.
1 joule is equal to 1.0E-9 gigajoule, or 3.7250614122937E-7 horsepower hour.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between gigajoules and horsepower hours.
Type in your own numbers in the form to convert the units!

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

1 gigajoule to horsepower hour = 372.50614 horsepower hour

2 gigajoule to horsepower hour = 745.01228 horsepower hour

3 gigajoule to horsepower hour = 1117.51842 horsepower hour

4 gigajoule to horsepower hour = 1490.02456 horsepower hour

5 gigajoule to horsepower hour = 1862.53071 horsepower hour

6 gigajoule to horsepower hour = 2235.03685 horsepower hour

7 gigajoule to horsepower hour = 2607.54299 horsepower hour

8 gigajoule to horsepower hour = 2980.04913 horsepower hour

9 gigajoule to horsepower hour = 3352.55527 horsepower hour

10 gigajoule to horsepower hour = 3725.06141 horsepower hour

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You can do the reverse unit conversion from horsepower hour to gigajoule, 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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