The en dash is a dash with a width of one en--half the width of an em dash. In typewritten texts, the en dash is represented by a single hyphen. Though it is often seen misused where an em dash belongs, its correct usage is in fact very different.

The en dash has three primary functions:

• to indicate an inclusive or continuing range of numbers or dates
• to connect a unit modifier with a two-word or hyphenated element
• in place of a hyphen in ALL–CAPITAL text.

examples:
"pp. 13–26"
"Nov. 27–Jan 13."
"New York–London flight"