1 kilogram per cubic meter (kg/m³) = 0.001 grams per cubic centimeter (g/cm³) = 0.0624 pounds per cubic foot (lb/ft³)
1 pound per cubic foot (lb/ft³) = 16.02 kilograms per cubic meter (kg/m³)
1 pound per cubic inch (lb/in³) = 27,679.9 kilograms per cubic meter (kg/m³)
1 pound per US gallon (lb/gal) = 119.826 kilograms per cubic meter (kg/m³)
1 pound per UK gallon (lb/gal) = 99.776 kilograms per cubic meter (kg/m³)
1 pound per barrel (lb/bbl) = 2.853 kilograms per cubic meter (kg/m³)
Balling degree (°B) = specific gravity at 15.5°C - 130
API gravity = 141.5 / specific gravity at 15.5°C - 131.5