The result of your conversion between Iron and pound/cubic foot appears here
To convert between Iron and Pound/cubic Foot you have to do the following:
First divide 7658 / 0.45359237/((0.0037854118/231)*1728) = 478.07332411
Then multiply the amount of Iron you want to convert to Pound/cubic Foot, use the chart below to guide you.
Symbol: iron
No description
Symbol: lb/ft³
No description