How many watthour in 1 zettajoule?
The answer is 2.7777777777778E+17.
We assume you are converting between watthour and zettajoule.
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watthour or zettajoule
The SI derived unit for energy is the joule.
1 joule is equal to 0.00027777777777778 watthour, 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 watthour and zettajoules.
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You can do the reverse unit conversion from zettajoule to watthour, or enter any two units below:
watthour to kilowatt-hour
watthour to gigacalorie
watthour to thermie
watthour to zeptojoule
watthour to kilogram calorie
watthour to hartree
watthour to hectowatt-hour
watthour to erg
watthour to electron volt
watthour to terajoule
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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