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B5 (International paper size: B), paper size

There is also a much less common B series. The area of B series sheets is the geometric mean of successive A series sheets. So, B1 is between A0 and A1 in size, with an area of 0.71 m² (). As a result, B0 has one side 1-metre long, and other sizes in the B series have one side that is a half, quarter or eighth of a metre. While less common in office use, it is used for a variety of special situations. Many posters use B-series paper or a close approximation, such as 50 cm×70 cm; B5 is a relatively common choice for books. The B series is also used for envelopes and passports.

Type the number of B5 you want to convert in the text box, to see the results in the table.

1 B5
is equal to
×0.71

International paper size: A

  • 4A

    ×0.01

  • 2A

    ×0.02

  • A0

    ×0.04

  • A1

    ×0.09

  • A2

    ×0.18

  • A3

    ×0.35

  • A4

    ×0.71

  • A5

    ×1.42

  • A6

    ×2.83

  • A7

    ×5.66

  • A8

    ×11.43

  • A9

    ×22.87

  • A10

    ×45.74

  •  

International paper size: B

International paper size: C

North American paper sizes

Japanese paper sizes

Inch based paper sizes

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