The result of your conversion between kiloton/cubic mile [UK] and grain/cubic foot appears here
To convert between Kiloton/cubic Mile [UK] and Grain/cubic Foot you have to do the following:
First divide ((0.45359237*2240)*1000)/(((0.0037854118/231)*1728*27)*5451776000) / ((0.45359237/16)*(192/175)/480)/((0.0037854118/231)*1728) = 0.10652322
Then multiply the amount of Kiloton/cubic Mile [UK] you want to convert to Grain/cubic Foot, use the chart below to guide you.
Symbol: kt/mi³
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Symbol: gr/ft³
No description