## ››Convert terawatthour to zettajoule

 terawatthour zettajoule

How many terawatthour in 1 zettajoule? The answer is 277777.77777778.
We assume you are converting between terawatthour and zettajoule.
You can view more details on each measurement unit:
terawatthour or zettajoule
The SI derived unit for energy is the joule.
1 joule is equal to 2.7777777777778E-16 terawatthour, or 1.0E-21 zettajoule.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between terawatthour and zettajoules.
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## ››Definition: Terawatthour

The SI prefix "tera" represents a factor of 1012, or in exponential notation, 1E12.

So 1 terawatthour = 1012 .

## ››Definition: Zettajoule

The SI prefix "zetta" represents a factor of 1021, or in exponential notation, 1E21.

So 1 zettajoule = 1021 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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