# Typography - What is a case fraction?

A case fraction is a fraction symbol that is typeset as a single character.

½

Other types of fraction:

This is a stack fraction. Also called a horizontal bar fraction or a vertical fraction.

$\frac{1}{2}$

This is an built fraction or built-up fraction. It uses at least 2 blocks of type. Also called an on-line fraction, because both numbers sit on the baseline.
The numerator and denominator are regular numerals separated by a forwardslash.

1/2

The term case may refer to the physical case in which the typesetting blocks were stored.