content.md 590 B

An en is a unit of measurement, half the size of an em, relative to the size of the font; therefore, in a typeface set at a font-size of 16px, one en is 8px.

![On the left, a glyph sitting inside an em square, with arrows illustrating half of its total width. On the right, an en dash, occupying almost the same half width.](images/thumbnail.svg)

The en dash is so named because its width, in theory, is one en—although in many fonts the en dash is somewhat narrower.