›› Convert gigawatt hour to watthour


›› More information from the unit converter

How many gigawatt-hour in 1 watthour? The answer is 1.0E-9.
We assume you are converting between gigawatt hour and watthour.
You can view more details on each measurement unit:
gigawatt-hour or watthour
The SI derived unit for energy is the joule.
1 joule is equal to 2.7777777777778E-13 gigawatt-hour, or 0.00027777777777778 watthour.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between gigawatt hours and watthour.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of gigawatt-hour to watthour

1 gigawatt-hour to watthour = 1000000000 watthour

2 gigawatt-hour to watthour = 2000000000 watthour

3 gigawatt-hour to watthour = 3000000000 watthour

4 gigawatt-hour to watthour = 4000000000 watthour

5 gigawatt-hour to watthour = 5000000000 watthour

6 gigawatt-hour to watthour = 6000000000 watthour

7 gigawatt-hour to watthour = 7000000000 watthour

8 gigawatt-hour to watthour = 8000000000 watthour

9 gigawatt-hour to watthour = 9000000000 watthour

10 gigawatt-hour to watthour = 10000000000 watthour

›› Want other units?

You can do the reverse unit conversion from watthour to gigawatt-hour, or enter any two units below:

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›› Common energy conversions

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