B – paper sizes

B series paper sizes is  defined by ISO 216 (international standard).

Note that the ISO B series has a 1:1.41 aspect ratio, which means that the length of the paper is 1.41 times the width. These paper formats are commonly used in Europe for printing and publishing documents, such as brochures, flyers, and posters.

All sizes of papers in the B series

B0 paper size

  • 1000 x 1414 mm
  • 39.4 x 55.7 in

B1 paper size

  • 707 x 1000 mm
  • 27.8 x 39.4 in

B2 paper size

  • 500 x 707 mm
  • 19.7 x 27.8 in

B3 paper size

  • 353 x 500 mm
  • 13.9 x 19.7 in

B4 paper size

  • 250 x 353 mm
  • 9.8 x 13.9 in

B5 paper size

  • 176 x 250 mm
  • 6.9 x 9.8 in

B6 paper size

  • 125 x 176 mm
  • 4.9 x 6.9 in

B7 paper size

  • 88 x 125 mm
  • 3.5 x 4.9 in

B8 paper size

  • 62 x 88 mm
  • 2.4 x 3.5 in

B9 paper size

  • 44 x 62 mm
  • ‘1.7 x 2.4 in

B10 paper size

  • 31 x 44 mm
  • 1.2 x 1.7 in

All B size papers are defined by ISO which is the international standard for papers. Only USA, Canada and Mexico are not using the ISO 216 standard.

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