| 511 mm * | 0.0393700787 in | = 20.1181102362 in | 
| 1 mm | 
| Eenhede van meting | Lengte | 
|---|---|
| Nanometer | 511000000.0 nm | 
| Mikrometer | 511000.0 µm | 
| Millimeter | 511.0 mm | 
| Sentimeter | 51.1 cm | 
| Duim | 20.1181102362 in | 
| Voet | 1.6765091864 ft | 
| Jaart | 0.5588363955 yd | 
| Meter | 0.511 m | 
| Kilometer | 0.000511 km | 
| Myl | 0.0003175207 mi | 
| Seemyl | 0.0002759179 nmi | 
