Topic summary
Mass density
Extracted from the Wikipedia article Density.
Units
From the equation for density (ρ = m/V), mass density has any unit that is mass divided by volume. As there are many units of mass and volume covering many different magnitudes there are a large number of units for mass density in use. The SI unit of kilogram per cubic metre (kg/m) and the cgs unit of gram per cubic centimetre (g/cm) are probably the most commonly used units for density. In industry, other larger or smaller units of mass and or volume are often more practical and US customary units may be used. See below for a list of some of the most common units of density.