The result of your conversion between megawatthour and petajoule appears here
To convert between Megawatthour and Petajoule you have to do the following:
First divide 3.6e+09 / 1.0e+15 = 0.0000036
Then multiply the amount of Megawatthour you want to convert to Petajoule, use the chart below to guide you.
Symbol: MWh
No description
Symbol: PJ
No description