Line height

Line height, also called leading or line spacing, is the vertical distance between two lines of adjacent text. It is measured from the baseline of one line of text to the baseline of the next. It’s usually defined in points (pt) or as a multiple of the font size (e.g., 1.5x).

Proper line height is vital to making text more readable. Too little space makes text look crowded and cluttered. Too much space can make it hard for the reader’s eye to travel smoothly from one line to the next.