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more free magazines       Glossary » Units » Surface Density » Pound Mass Per Square Foot Pound Mass Per Square Foot (lbm/ft2) is a unit in the category of Surface density. It is also known as pounds per square foot, pound mass/square foot. Pound Mass Per Square Foot (lbm/ft2) has a dimension of ML-2 where M is mass, and L is length. It can be converted to the corresponding standard SI unit kg/m2 by multiplying its value by a factor of 4.88242763638.
Note that the seven base dimensions are M (Mass), L (Length), T (Time), Q (Temperature), N (Aamount of Substance), I (Electric Current), and J (Luminous Intensity).

Other units in the category of Surface density include Gram Per Square Centimeter (g/cm2), Kilogram Per Square Centimeter (kg/cm2), Kilogram Per Square Meter (kg/m2), Microgram Per Square Millimeter (µg/mm2), Ounce Mass Per Square Inch (ozm/in2), and Pound Mass Per Square Inch (lbm/in2).   