What Is a Counter in Typography?

Most people look at the black part of a letter. Type designers look at the white. The counter is the space an o holds in its middle, the pocket under the arch of an n, the small eye inside an e, and the two chambers of a B. A letter’s character comes as much from the shape and size of those spaces as from the strokes around them.

Closed and open counters

A closed counter is fully surrounded by stroke: o, d, b, p, q, A, D, O, R and the upper half of B. An open (or partially enclosed) counter has a gap on one side: c, n, h, m, u, s and the double-story a below its bowl. The gap itself is the aperture, so the two terms often travel together. A counter is the volume of white, an aperture is the door into it.

Some letters have no counter at all, including l, i, I, T, V and x. This is partly why they are easy to confuse in some typefaces and why designers add tails or serifs to a capital I and a lowercase l.

Why counters matter

Counters control how dense a line of type looks. A face with large round counters, such as many geometric sans-serifs, feels open and airy. A face with narrow, tall counters, such as a condensed grotesque, feels tight and dark. When you bolden a typeface, the strokes grow into the counters and shrink them, so display weights usually need redrawn counters instead of simple thickening. A lettering artist who fattens a stroke without enlarging the inside will see an e clog first.

The height of the counter in a lowercase letter is tied to the x-height. Tall x-heights give the counters more vertical room, which is one reason large x-height fonts stay readable on phones.

Counters in hand lettering

When you draw letters with outlines, you are really drawing counters. A useful habit is to sketch the white shapes first, as if each letter were a stencil, and then wrap strokes around them. Two things follow:

1. Counters inside a word should feel related. The hole in o and the hole in p should be nearly the same shape, and the space between letters should hold a similar amount of white.
2. In inline, shadow and bubble styles the counter is where decoration lives. A thin highlight, a fill color or a doodled star goes inside it. If the counter is too small the decoration looks crammed, so add room before you add effects.

In brush lettering, thick downstrokes eat counters from both sides. Keeping the downstroke weight under control, or widening the letter slightly, preserves the white. Our what is lettering guide covers why drawing the shape of letters, not just writing them, gives you this control.

Counters in fancy text

Fancy Unicode text has no counters you can adjust, because every glyph is a fixed design taken from a font. But the idea explains why some styles are easier to read than others. Bold Fraktur from the old English text generator has tiny counters and heavy strokes, so it reads poorly in small sizes. Outline styles open the counters into a double line and become readable at larger sizes only. Style choice is partly counter choice.

Common confusions

• Counter is not the whole letter’s white space. The space between letters is spacing or sidebearing; the counter lies inside the letter.
• A counter is not always round. Squarer faces have rectangular counters, and italic faces slant them.
• Counter is a space, not a stroke. Thickening or thinning a stroke changes the counter, but the counter is only ever the white left over.