How many zettawatthour in 1 gigawatt-hour? The answer is 1.0E-12. We assume you are converting between zettawatthour and gigawatt hour. You can view more details on each measurement unit: zettawatthour or gigawatt-hour The SI derived unit for energy is the joule. 1 joule is equal to 2.7777777777778E-25 zettawatthour, or 2.7777777777778E-13 gigawatt-hour. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between zettawatthour and gigawatt hours. Type in your own numbers in the form to convert the units!
1 zettawatthour to gigawatt-hour = 1000000000000 gigawatt-hour
2 zettawatthour to gigawatt-hour = 2000000000000 gigawatt-hour
3 zettawatthour to gigawatt-hour = 3000000000000 gigawatt-hour
4 zettawatthour to gigawatt-hour = 4000000000000 gigawatt-hour
5 zettawatthour to gigawatt-hour = 5000000000000 gigawatt-hour
6 zettawatthour to gigawatt-hour = 6000000000000 gigawatt-hour
7 zettawatthour to gigawatt-hour = 7000000000000 gigawatt-hour
8 zettawatthour to gigawatt-hour = 8000000000000 gigawatt-hour
9 zettawatthour to gigawatt-hour = 9000000000000 gigawatt-hour
10 zettawatthour to gigawatt-hour = 10000000000000 gigawatt-hour
You can do the reverse unit conversion from gigawatt-hour to zettawatthour, or enter any two units below:
The SI prefix "zetta" represents a factor of 1021, or in exponential notation, 1E21.
So 1 zettawatthour = 1021 .
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