line length

45–90 characters or 2–3 alphabets

Line length is the dis­tance between the left and right edges of a text block. Overly long lines are a com­mon prob­lem, but they’re easy to cor­rect. Shorter lines will make a big dif­fer­ence in the leg­i­bil­ity and pro­fes­sion­al­ism of your lay­out.

The most use­ful way to mea­sure line length is by aver­age char­ac­ters per line. Mea­sur­ing in inches or cen­time­ters is less use­ful because the point size of the font affects the num­ber of char­ac­ters per inch. Whereas char­ac­ters per line works at any point size.

Shorter lines are more com­fort­able to read than longer lines. As line length increases, your eye has to travel far­ther from the end of one line to the begin­ning of the next. Aim for an aver­age line length of 45–90 char­ac­ters, includ­ing spaces. You can check line length using word count.