21 inches
Aspect ratio 16:9
- 17 inches×1.53
- 19 inches×1.22
- 20 inches×1.1
- 21 inches×1
- 22 inches×0.91
- 24 inches×0.77
- 27 inches×0.6
- 28 inches×0.56
- 32 inches×0.43
- 40 inches×0.28
- 43 inches×0.24
- 48 inches×0.19
- 50 inches×0.18
- 55 inches×0.15
- 60 inches×0.12
- 65 inches×0.1
- 70 inches×0.09
- 75 inches×0.08
- 80 inches×0.07
- 85 inches×0.06
- 98 inches×0.05
Metric
- Kilometre (km)4.65×10⁻⁴ x 2.62×10⁻⁴
- Metre (m)0.46 x 0.26
- Decimetre (dm)4.65 x 2.62
- Centimetre (cm)46.49 x 26.15
- Millimetre (mm)464.9 x 261.51
- Micrometre (µm)464,898.39 x 261,505.35
- Nanometre (nm)464,898,391.5 x 261,505,345.22
- Angstrom (Å)4.65×10⁹ x 2.62×10⁹
British/American
- League9.63×10⁻⁵ x 5.42×10⁻⁵
- Mile (mi)2.89×10⁻⁴ x 1.62×10⁻⁴
- Furlong2.31×10⁻³ x 1.3×10⁻³
- Chain0.02 x 0.01
- Rod (rd)0.09 x 0.05
- Yard (yd)0.51 x 0.29
- Foot (ft)1.53 x 0.86
- Link2.31 x 1.3
- Hand4.58 x 2.57
- Inch (in)18.3 x 10.3
- Line183.03 x 102.95
- Mil (mil)18,303.09 x 10,295.49
- Thou (thou)18,303.09 x 10,295.49
Nautical
- Nautical mile2.51×10⁻⁴ x 1.41×10⁻⁴
- Fathom0.25 x 0.14
Astronomical
- Parsec (pc)1.51×10⁻¹⁷ x 8.47×10⁻¹⁸
- Light year4.91×10⁻¹⁷ x 2.76×10⁻¹⁷
- Astronomical unit (AE)3.11×10⁻¹² x 1.75×10⁻¹²
- Light minute2.58×10⁻¹¹ x 1.45×10⁻¹¹
- Light second1.55×10⁻⁹ x 8.72×10⁻¹⁰