g/cm3 = kg/dm3 = t/m3, gram per cm3 ... gr/ft3, grain per cubic foot gr/in3, grain per cubic inch lb/ft3, pound per cubic foot lb/gal(UK), pound per gallon (UK) lb/gal(US), pound per gallon (US) lb/in3, pound per cubic inch   The results have been rounded to 1234 56 789 significant digits.