Typography MasterGuide

Measure

The width of a block of text, usually expressed in characters per line; also called line length.

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Measure & Readability

Related tool

Line Length Tester

Find optimal measure for readability across viewports.

Related terms

Line Height
The CSS property that sets the height of a line box, controlling vertical spacing between lines of text.
Readability
How easily a reader can understand written text, influenced by measure, line height, contrast, and typeface choice.