| 21 ft * | 12.0 in | = 252.0 in | 
| 1 ft | 
| Unità | Unità ta 'tul | 
|---|---|
| Nanometru | 6400800000.0 nm | 
| Mikrometru | 6400800.0 µm | 
| Millimetru | 6400.8 mm | 
| ċentimetru | 640.08 cm | 
| Pulzier | 252.0 in | 
| Piedi | 21.0 ft | 
| Yard | 7.0 yd | 
| Metru | 6.4008 m | 
| Kilometru | 0.0064008 km | 
| Mil | 0.0039772727 mi | 
| Mil nawtiku | 0.0034561555 nmi | 
