The result of your conversion between femtojoule and petawatthour appears here
To convert between Femtojoule and Petawatthour you have to do the following:
First divide 1.0e-15 / 3.6e+18 = 0.
Then multiply the amount of Femtojoule you want to convert to Petawatthour, use the chart below to guide you.
Symbol: fJ
No description
Symbol: PWh
No description