The result of your conversion between foot pound and pound/cubic foot appears here
To convert between Foot Pound and Pound/cubic Foot you have to do the following:
First divide 1.3558179 / 0.45359237/((0.0037854118/231)*1728) = 0.08464095
Then multiply the amount of Foot Pound you want to convert to Pound/cubic Foot, use the chart below to guide you.
Symbol: ft lb
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Symbol: lb/ft³
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