Femtowatt-hours to gigawatt-hours equation
To convert femtowatt-hours to gigawatt-hours:
Multiply the number of femtowatt-hours by 1.0000000000000001e-24
About femtowatt-hours
One femtowatt-hour is equal to a quadrillionth watt-hours
About gigawatt-hours
One gigawatt-hour is equal to a billion watt-hours