How many attojoule in 1 watthour?
The answer is 3.6E+21.
We assume you are converting between attojoule and watthour.
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attojoule or watthour
The SI derived unit for energy is the joule.
1 joule is equal to 1.0E+18 attojoule, or 0.00027777777777778 watthour.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between attojoules and watthour.
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You can do the reverse unit conversion from watthour to attojoule, or enter any two units below:
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attojoule to femtojoule
attojoule to megaton
The SI prefix "atto" represents a factor of 10-18, or in exponential notation, 1E-18.
So 1 attojoule = 10-18 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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