Cap height

In typography, cap height is the height of a capital letter above the baseline for a particular typeface.^[1] It specifically is the height of capital letters that are flat—such as H or I—as opposed to round letters such as O, or pointed letters like A, both of which may display overshoot. The height of the small letters is the x-height.

References

^ http://pfaedit.sourceforge.net/glossary.html Glossary of (some) Typographic Terms

External links

Typography

Page

Canons of page construction
Column
Even working
Margin
Page numbering
Paper size
Pagination
Pull quote
Recto and verso
Intentionally blank page

Paragraph

Alignment
Leading
River
Runaround
Widows and orphans

Character

Typeface anatomy	Counter Diacritics Dingbat Glyph Ink trap Ligature Rotation Subscript and superscript Swash Text figures Tittle
Capitalization	All caps Camel case Initial Letter case Small caps Snake case Title case
Visual distinction	Italics Oblique Bold Color printing Underline Blackboard bold Blackletter
Horizontal aspects	Figure space Kerning Letter-spacing Sentence spacing Space Thin space
Vertical aspects	Ascender Baseline Body height Cap height Descender Median Overshoot x-height

Typeface
classifications

Roman type	Serif (Antiqua, Didone, slab serif) Sans-serif
Blackletter type	Fraktur Rotunda Schwabacher
Gaelic type	Insular Uncial
Specialist	Record type Display typeface (script, fat face, reverse-contrast)