B Paper Sizes

B0 1000 × 1414 mm B1 707 × 1000 mm B2 500 × 707 mm B3 353 × 500 mm B4 250 × 353 mm B5 176 × 250 mm B6 125 × 176 mm B7 88 × 125 mm B8 62 × 88 mm B9 44 × 62 mm B10 31 × 44 mm B11 22 × 31 mm B12 15 × 22 mm B13 11 × 15 mm B0+ 1118 × 1580 mm B1+ 720 × 1020 mm B2+ 520 × 720 mm

Further Information

The dimensions of the B series paper sizes are defined by the ISO 216 international paper size standard. The B series is not as common as the A series. It was created to provide paper sizes that were not included in the A series. The B series uses an aspect ratio of 1:√2. The area of the B series paper sheets is the geometric mean of the A series sheets. For example, B1 is between A0 and A1 in size. While the B series is less common in office use, it is more regularly used in other special situations, such as posters, books, envelopes and passports.

Format	Width × Height (mm)	Width × Height (in)
B0	1000 × 1414 mm	39.4 × 55.7 in
B1	707 × 1000 mm	27.8 × 39.4 in
B2	500 × 707 mm	19.7 × 27.8 in
B3	353 × 500 mm	13.9 × 19.7 in
B4	250 × 353 mm	9.8 × 13.9 in
B5	176 × 250 mm	6.9 × 9.8 in
B6	125 × 176 mm	4.9 × 6.9 in
B7	88 × 125 mm	3.5 × 4.9 in
B8	62 × 88 mm	2.4 × 3.5 in
B9	44 × 62 mm	1.7 × 2.4 in
B10	31 × 44 mm	1.2 × 1.7 in
B11	22 × 31 mm	0.9 × 1.2 in
B12	15 × 22 mm	0.6 × 0.9 in
B13	11 × 15 mm	0.4 × 0.6 in
B0+	1118 × 1580 mm	44 × 62.2 in
B1+	720 × 1020 mm	28.3 × 40.2 in
B2+	520 × 720 mm	20.5 × 28.3 in