20 inches

TV & monitor size

17.43 x 9.81 in

Aspect ratio 4:3

Aspect ratio 5:4

Aspect ratio 16:9

Aspect ratio 16:10

Aspect ratio 21:9

Aspect ratio 32:9

Metric

  • Kilometre (km)
    4.43×10⁻⁴ x 2.49×10⁻⁴
  • Metre (m)
    0.44 x 0.25
  • Decimetre (dm)
    4.43 x 2.49
  • Centimetre (cm)
    44.28 x 24.91
  • Millimetre (mm)
    442.76 x 249.05
  • Micrometre (µm)
    442,760.37 x 249,052.71
  • Nanometre (nm)
    442,760,372.86 x 249,052,709.73
  • Angstrom (Å)
    4.43×10⁹ x 2.49×10⁹

British/American

  • League
    9.17×10⁻⁵ x 5.16×10⁻⁵
  • Mile (mi)
    2.75×10⁻⁴ x 1.55×10⁻⁴
  • Furlong
    2.2×10⁻³ x 1.24×10⁻³
  • Chain
    0.02 x 0.01
  • Rod (rd)
    0.09 x 0.05
  • Yard (yd)
    0.48 x 0.27
  • Foot (ft)
    1.45 x 0.82
  • Link
    2.2 x 1.24
  • Hand
    4.36 x 2.45
  • Inch (in)
    17.43 x 9.81
  • Line
    174.32 x 98.05
  • Mil (mil)
    17,431.51 x 9,805.22
  • Thou (thou)
    17,431.51 x 9,805.22

Nautical

  • Nautical mile
    2.39×10⁻⁴ x 1.34×10⁻⁴
  • Fathom
    0.24 x 0.14

Astronomical

  • Parsec (pc)
    1.43×10⁻¹⁷ x 8.07×10⁻¹⁸
  • Light year
    4.68×10⁻¹⁷ x 2.63×10⁻¹⁷
  • Astronomical unit (AE)
    2.96×10⁻¹² x 1.66×10⁻¹²
  • Light minute
    2.46×10⁻¹¹ x 1.38×10⁻¹¹
  • Light second
    1.48×10⁻⁹ x 8.31×10⁻¹⁰