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mm
B Paper Sizes
B0 1000 × 1414mm B1 707 × 1000mm B2 500 × 707mm B3 353 × 500mm B4 205 × 353mm B5 176 × 250mm B6 125 × 176mm B7 88 × 125mm B8 62 × 88mm B9 44 × 62mm B10 31 × 44mm B11 22 × 31mm B12 15 × 22mm B13 11 × 15mm B0+ 1118 × 1580mm B1+ 720 × 1020mm B2+ 520 × 720mm
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.

B Paper Sizes Overview
Format Width × Height (mm)W × H (mm) Width × Height (in)W × H (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 205 × 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