For other meanings of density, see Density (disambiguation)

Linear density or Linear mass is a measure of mass per unit of length, and it is a characteristic of strings or one-dimensional objects.

The SI unit of linear density is the kilogram per metre (kg/m).

$\backslash mu\; =\; \backslash frac\{m\}\{L\}$

where

μ is the linear mass of the string (measured in kilograms per metre)

m is the total mass of the string (measured in kilograms)

L is the total length of the string (measured in metres)

See also

• Mass

Physical quantity

The term linear density also refers to how dense a line can be drawn.