| 50.8 cm * | 0.3937007874 in | = 20.0 in | 
| 1 cm | 
| Eenhede van meting | Lengte | 
|---|---|
| Nanometer | 508000000.0 nm | 
| Mikrometer | 508000.0 µm | 
| Millimeter | 508.0 mm | 
| Sentimeter | 50.8 cm | 
| Duim | 20.0 in | 
| Voet | 1.6666666667 ft | 
| Jaart | 0.5555555556 yd | 
| Meter | 0.508 m | 
| Kilometer | 0.000508 km | 
| Myl | 0.0003156566 mi | 
| Seemyl | 0.0002742981 nmi | 
