20 inches

TV & monitor size

16 x 12 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)
    4.06×10⁻⁴ x 3.05×10⁻⁴
  • Metre (m)
    0.41 x 0.3
  • Decimetre (dm)
    4.06 x 3.05
  • Centimetre (cm)
    40.64 x 30.48
  • Millimetre (mm)
    406.4 x 304.8
  • Micrometre (µm)
    406,400 x 304,800
  • Nanometre (nm)
    406,400,000 x 304,800,000
  • Angstrom (Å)
    4.06×10⁹ x 3.05×10⁹

British/American

  • League
    8.42×10⁻⁵ x 6.31×10⁻⁵
  • Mile (mi)
    2.53×10⁻⁴ x 1.89×10⁻⁴
  • Furlong
    2.02×10⁻³ x 1.52×10⁻³
  • Chain
    0.02 x 0.02
  • Rod (rd)
    0.08 x 0.06
  • Yard (yd)
    0.44 x 0.33
  • Foot (ft)
    1.33 x 1
  • Link
    2.02 x 1.52
  • Hand
    4 x 3
  • Inch (in)
    16 x 12
  • Line
    160 x 120
  • Mil (mil)
    16,000 x 12,000
  • Thou (thou)
    16,000 x 12,000

Nautical

  • Nautical mile
    2.19×10⁻⁴ x 1.65×10⁻⁴
  • Fathom
    0.22 x 0.17

Astronomical

  • Parsec (pc)
    1.32×10⁻¹⁷ x 9.88×10⁻¹⁸
  • Light year
    4.3×10⁻¹⁷ x 3.22×10⁻¹⁷
  • Astronomical unit (AE)
    2.72×10⁻¹² x 2.04×10⁻¹²
  • Light minute
    2.26×10⁻¹¹ x 1.69×10⁻¹¹
  • Light second
    1.36×10⁻⁹ x 1.02×10⁻⁹