The result of your conversion between gigawatt hour and petajoule appears here
To convert between Gigawatt Hour and Petajoule you have to do the following:
First divide 3.6e+12 / 1.0e+15 = 0.0036
Then multiply the amount of Gigawatt Hour you want to convert to Petajoule, use the chart below to guide you.
Symbol: GWh
No description
Symbol: PJ
No description