B7

The B7 paper size is part of the ISO B series used for specialized printing applications and ultra-portable documents. With miniature dimensions of 88 x 125 mm, B7 provides an extremely compact format optimized for mobility. It maintains the distinctive height-to-width ratio of 1:√2 (approximately 1:1.4142) that enables consistent scaling down the B system sizes.

With a surface area of just 0.01 square meters, B7 offers a highly space-saving print area. Its tiny size suits small charts, pocket notebooks, flashcards, and specialized prints needing maximum portability. The origins of B7 date back to the German DIN 476 standard from 1922 before being adopted as an ISO standard in 1975. Today, B7 finds use in fieldwork, engineering, manufacturing, and printing niches requiring portable technical documents and miniaturized visual information. Its tiny but functional format gives B7 unique utility.