JB11

The JB11 paper size format measures 22mm x 32mm (0.9 inches x 1.3 inches), resulting in a compact surface area of 0.0007 square meters. As part of the Japanese B series paper standards introduced through post-WWII industrial reforms, JB11 continues the traditional Japanese “Kiku” aspect ratio. With highly space-efficient dimensions suitable for tiny materials like labels and stickers, JB11 serves specialized printing niches across East Asia. However, it sees little adoption abroad compared to globally prominent ISO sizes. Following cultural emphasis on precision and conservation, the origins of exacting JB11 dimensions trace back to mid-20th century efforts translating foreign standards into localized industrial guidelines tailored for Japan and neighboring regions’ needs.