The result of your conversion between joule and petawatthour appears here
To convert between Joule and Petawatthour you have to do the following:
First divide 1 / 3.6e+18 = 0.
Then multiply the amount of Joule you want to convert to Petawatthour, use the chart below to guide you.
Symbol: J
No description
Symbol: PWh
No description