B0

The B0 paper size is part of the ISO B series used for posters, engineering drawings, and large-format documents. With dimensions of 1000 x 1414 mm, B0 is the largest size in the B system. The unusual height-to-width ratio of 1:√2 (approximately 1:1.4142) derives from the ISO math of progressively halving the sheet area while maintaining the aspect ratio. This allows the B series sizes to scale down efficiently.

With a surface area of 1.41 square meters, B0 provides an expansive printing space. Its large dimensions make B0 a popular choice for very big posters, architectural plans, wide infographics, and other oversized documents. The origins of B0 trace back to the German DIN 476 standard from 1922. B0 was officially adopted as an ISO standard in 1975. Today, many industries utilize B0 for conveying visual information and detailed plans across large-format media. Its maximized print space sets B0 apart from smaller paper sizes.