# Picas and Points

# Picas and Points

Given the ubiquity of word processors, most people are probably familiar with points from the context of font sizes. One point is equal to 1/72nd of an inch, or 0.3528 millimetres. Such a tiny unit of measurement is particularly useful in typography, which requires very meticulous adjustment.

Picas are a duodecimal unit of measurement, which means that they consist of 12 parts; one pica is equal to 12 points, which amounts to 1/6th of an inch or 4.2333 millimetres. A measurement in picas is written with a lowercase P distinguishing between whole picas and the remaining points. 1p6, for instance, describes 1.5 picas, or 18 points.