The result of your conversion between gram calorie and petawatthour appears here
To convert between Gram Calorie and Petawatthour you have to do the following:
First divide 4.1858 / 3.6e+18 = 0.
Then multiply the amount of Gram Calorie you want to convert to Petawatthour, use the chart below to guide you.
Symbol: g cal
No description
Symbol: PWh
No description