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Kilogram Per Square Meter (kg/m²) is a unit in the category of Surface density. It is also known as kilograms per square meter, kilogram per square metre, kilograms per square metre, kilogram/square meter, kilogram/square metre. This unit is commonly used in the SI unit system. Kilogram Per Square Meter (kg/m²) has a dimension of ML^-2 where M is mass, and L is length. This unit is the standard SI unit in this category.

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), Microgram Per Square Millimeter (µg/mm²), Ounce Mass Per Square Inch (ozm/in²), Pound Mass Per Square Foot (lbm/ft²), and Pound Mass Per Square Inch (lbm/in²).