The result of your conversion between gigajoule and watthour appears here
To convert between Gigajoule and Watthour you have to do the following:
First divide 1.0e+09 / 3600 = 277777.77777778
Then multiply the amount of Gigajoule you want to convert to Watthour, use the chart below to guide you.
Symbol: GJ
No description
Symbol: Wh
No description