B8

The B8 paper size is part of the ISO B series used for ultra-compact printing and portable technical documents. With minuscule dimensions of 62 x 88 mm, B8 is the smallest standard B format defined. It retains the characteristic height-to-width ratio of 1:√2 (approximately 1:1.4142) that enables consistent scaling across the B system.

With a surface area of just 0.005 square meters, B8 provides an extremely space-saving print area. Its tiny size is ideal for index cards, mini charts, pocket references, and specialized prints requiring maximum portability. The origins of B8 date back to the German DIN 476 standard from 1922 before being adopted as an ISO standard in 1975. Today, B8 finds specialized use in engineering, manufacturing, fieldwork, and printing applications needing portable technical documents and micro-visuals. Its tiny but mighty format gives B8 unique utility.