How many zeptojoule in 1 kilowatt-hour? The answer is 3.6E+27. We assume you are converting between zeptojoule and kilowatt hour. You can view more details on each measurement unit: zeptojoule or kilowatt-hour The SI derived unit for energy is the joule. 1 joule is equal to 1.0E+21 zeptojoule, or 2.7777777777778E-7 kilowatt-hour. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between zeptojoules and kilowatt hours. Type in your own numbers in the form to convert the units!
You can do the reverse unit conversion from kilowatt-hour to zeptojoule, or enter any two units below:
The SI prefix "zepto" represents a factor of 10-21, or in exponential notation, 1E-21.
So 1 zeptojoule = 10-21 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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