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ISO 216 defines the most common paper size standard in operation in the world today. With the exception of the United States, Canada, Peru, Mexico, Colombia and The Dominican Republic, the ISO 216 is used in every country to specify standard "A" size and "B" size paper..

B Series paper follows closely the same size standards as A standard paper. Although it is not as common in offices around the world as A paper, it is widely used in posters and passports.

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