B5

Paper size

176 x 250 mm

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.

International paper size: A

International paper size: B

International paper size: C

North American paper sizes

Japanese paper sizes

Inch based paper sizes

Metric

  • Kilometre (km)
    1.76×10⁻⁴ x 2.5×10⁻⁴
  • Metre (m)
    0.18 x 0.25
  • Decimetre (dm)
    1.76 x 2.5
  • Centimetre (cm)
    17.6 x 25
  • Millimetre (mm)
    176 x 250
  • Micrometre (µm)
    176,000 x 250,000
  • Nanometre (nm)
    176,000,000 x 250,000,000
  • Angstrom (Å)
    1.76×10⁹ x 2.5×10⁹

British/American

  • League
    3.65×10⁻⁵ x 5.18×10⁻⁵
  • Mile (mi)
    1.09×10⁻⁴ x 1.55×10⁻⁴
  • Furlong
    8.75×10⁻⁴ x 1.24×10⁻³
  • Chain
    0.01 x 0.01
  • Rod (rd)
    0.03 x 0.05
  • Yard (yd)
    0.19 x 0.27
  • Foot (ft)
    0.58 x 0.82
  • Link
    0.87 x 1.24
  • Hand
    1.73 x 2.46
  • Inch (in)
    6.93 x 9.84
  • Line
    69.29 x 98.43
  • Mil (mil)
    6,929.13 x 9,842.52
  • Thou (thou)
    6,929.13 x 9,842.52

Nautical

  • Nautical mile
    9.5×10⁻⁵ x 1.35×10⁻⁴
  • Fathom
    0.1 x 0.14

Astronomical

  • Parsec (pc)
    5.7×10⁻¹⁸ x 8.1×10⁻¹⁸
  • Light year
    1.86×10⁻¹⁷ x 2.64×10⁻¹⁷
  • Astronomical unit (AE)
    1.18×10⁻¹² x 1.67×10⁻¹²
  • Light minute
    9.78×10⁻¹² x 1.39×10⁻¹¹
  • Light second
    5.87×10⁻¹⁰ x 8.34×10⁻¹⁰