Size Dimension
B0 100 x 141 cm
B1 70.7 x 100 cm
B2 50 x 71 cm
B3 35.3 x 50 cm
B4 25 x 35.3 cm
B5 17.6 x 25 cm
B6 12.5 x 17.6 cm
B7 8.8 x 12.5 cm
B8 6.2 x 8.8 cm
B9 4.4 x 6.2 cm
B10 3.1 x 4 cm

B series papers are used as an alternative where the A series is not suitable. Similar to the A series papers, its dimensions are defined by the ISO 216 International Standard for paper sizes. Using B series is a good idea when the A series is too big or small for the document you’re working on.

The sizes offered by the B series are between each of the A series paper sizes. B5, for instance, measures between A4 and A5.

Following the same concept as the A series, a sheet of paper in the B series, when folded in half, will result to the next smaller size. B3 is half of B2, B2 is half of B1, and so on. Like the A series, the B series’ aspect ratio is 1:√2.

While less frequently used in office settings, the B series is relevant for a variety of special uses. Most posters use B series papers and B5 is a common choice for books. Other uses include envelopes and passports.

Easily create beautiful designs & documents

Use Canva's drag-and-drop editor and professional layouts to design consistently stunning graphics.

Start designing
Easily create beautiful designs & documents
Easily create beautiful designs & documents on mobile