A simple and easy-to-use specific gravity/ SG/ density Equations Calculator. Unit Conversion: Nanogram, microgram, milligram, gram, kilogram, pound ounce stone stone carat, ton quintal G/mm^3, g/mL, g/L, Kg/L, Kg/m^3, oz/in^3, mg/mL, mg/mm^3, mg/cm^3, g/cm^3, oz/ft^3, oz/gal oz/gal lb/in^3, lb/ft^3, lb/gal lb/gal