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    B paper sizes

    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.

    FormatWidth x Height (mm)Width x Height (inches)
    B01000 x 141439.37 x 55.67
    B1707 x 100027.83 x 39.37
    B2500 x 70719.69 x 27.83
    B3353 x 50013.9 x 19.69
    B4250 x 3539.84 x 13.9
    B5176 x 2506.93 x 9.84
    B6125 x 1764.92 x 6.93
    B788 x 1253.46 x 4.92
    B862 x 882.44 x 3.46
    B944 x 621.73 x 2.44
    B1031 x 441.22 x 1.73
    B1122 x 310.87 x 1.22
    B1215 x 220.59 x 0.87
    B1311 x 150.43 x 0.59
    B0+1118 x 158044.02 x 62.2
    B1+720 x 102028.35 x 40.16
    B2+520 x 72020.47 x 28.35
    B series paper sizes diagram showing B0, B1, B2, B3, B4, B5, B6 and their relative proportions
    B Paper Sizes | B0, B1, B2, B3, B4, B5, B6, B7, B8, B9