Femtowatt-hours to rontowatt-hours equation
To convert femtowatt-hours to rontowatt-hours:
Multiply the number of femtowatt-hours by 1000000000000.0001
About femtowatt-hours
One femtowatt-hour is equal to a quadrillionth watt-hours
About rontowatt-hours
One rontowatt-hour is equal to a octillionth watt-hours