Quettawatt-hours to gigawatt-hours equation
To convert quettawatt-hours to gigawatt-hours:
Multiply the number of quettawatt-hours by 1.0000000000000001e+21
About quettawatt-hours
One quettawatt-hour is equal to a nonillion watt-hours
About gigawatt-hours
One gigawatt-hour is equal to a billion watt-hours