The result of your conversion between gigajoule and megawatthour appears here
To convert between Gigajoule and Megawatthour you have to do the following:
First divide 1.0e+09 / 3.6e+09 = 0.27777778
Then multiply the amount of Gigajoule you want to convert to Megawatthour, use the chart below to guide you.
Symbol: GJ
No description
Symbol: MWh
No description