The result of your conversion between watthour and grain/cubic foot appears here
To convert between Watthour and Grain/cubic Foot you have to do the following:
First divide 3600 / ((0.45359237/16)*(192/175)/480)/((0.0037854118/231)*1728) = 1573184.61316831
Then multiply the amount of Watthour you want to convert to Grain/cubic Foot, use the chart below to guide you.
Symbol: Wh
No description
Symbol: gr/ft³
No description