Convert from em to line [small]

Unit Definition (em)
The em is a printer's unit of relative distance. One em is the height of the type size (in points) being used. If 12 point type is being set, then one em is 12 points, and so on.

Unit Definition (line [small])
The line [small] is a unit of distance equal to 1/14 inch, used in printing and advertising. This usage is short for agate line.