C8

Paper size

57 x 81 mm

International paper size: A

  • 4A
    ×1.15×10⁻³
  • 2A
    ×2.31×10⁻³
  • A0
    ×4.62×10⁻³
  • A1
    ×0.01
  • A2
    ×0.02
  • A3
    ×0.04
  • A4
    ×0.07
  • A5
    ×0.15
  • A6
    ×0.3
  • A7
    ×0.59
  • A8
    ×1.2
  • A9
    ×2.4
  • A10
    ×4.8

International paper size: B

  • 4B
    ×8.16×10⁻⁴
  • 2B
    ×1.63×10⁻³
  • B0
    ×3.27×10⁻³
  • B1
    ×0.01
  • B2
    ×0.01
  • B3
    ×0.03
  • B4
    ×0.05
  • B5
    ×0.1
  • B6
    ×0.21
  • B7
    ×0.42
  • B8
    ×0.85
  • B9
    ×1.69
  • B10
    ×3.38

International paper size: C

North American paper sizes

Japanese paper sizes

Inch based paper sizes

Metric

  • Kilometre (km)
    5.7×10⁻⁵ x 8.1×10⁻⁵
  • Metre (m)
    0.06 x 0.08
  • Decimetre (dm)
    0.57 x 0.81
  • Centimetre (cm)
    5.7 x 8.1
  • Millimetre (mm)
    57 x 81
  • Micrometre (µm)
    57,000 x 81,000
  • Nanometre (nm)
    57,000,000 x 81,000,000
  • Angstrom (Å)
    570,000,000 x 810,000,000

British/American

  • League
    1.18×10⁻⁵ x 1.68×10⁻⁵
  • Mile (mi)
    3.54×10⁻⁵ x 5.03×10⁻⁵
  • Furlong
    2.83×10⁻⁴ x 4.03×10⁻⁴
  • Chain
    2.83×10⁻³ x 4.03×10⁻³
  • Rod (rd)
    0.01 x 0.02
  • Yard (yd)
    0.06 x 0.09
  • Foot (ft)
    0.19 x 0.27
  • Link
    0.28 x 0.4
  • Hand
    0.56 x 0.8
  • Inch (in)
    2.24 x 3.19
  • Line
    22.44 x 31.89
  • Mil (mil)
    2,244.09 x 3,188.98
  • Thou (thou)
    2,244.09 x 3,188.98

Nautical

  • Nautical mile
    3.08×10⁻⁵ x 4.37×10⁻⁵
  • Fathom
    0.03 x 0.04

Astronomical

  • Parsec (pc)
    1.85×10⁻¹⁸ x 2.63×10⁻¹⁸
  • Light year
    6.02×10⁻¹⁸ x 8.56×10⁻¹⁸
  • Astronomical unit (AE)
    3.81×10⁻¹³ x 5.41×10⁻¹³
  • Light minute
    3.17×10⁻¹² x 4.5×10⁻¹²
  • Light second
    1.9×10⁻¹⁰ x 2.7×10⁻¹⁰