The result of your conversion between hectojoule and gigajoule appears here
To convert between Hectojoule and Gigajoule you have to do the following:
First divide 100 / 1.0e+09 = 0.0000001
Then multiply the amount of Hectojoule you want to convert to Gigajoule, use the chart below to guide you.
Symbol: hJ
No description
Symbol: GJ
No description