# ››Convert hectowatt hour to exajoule

 hectowatt-hour exajoule

How many hectowatt-hour in 1 exajoule? The answer is 2.77777777778E+12.
We assume you are converting between hectowatt hour and exajoule.
You can view more details on each measurement unit:
hectowatt-hour or exajoule
The SI derived unit for energy is the joule.
1 joule is equal to 2.77777777778E-6 hectowatt-hour, or 1.0E-18 exajoule.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between hectowatt hours and exajoules.
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# ››Definition: Exajoule

The SI prefix "exa" represents a factor of 1018, or in exponential notation, 1E18.

So 1 exajoule = 1018 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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