| 646 cm * | 0.3937007874 in | = 254.330708661 in | 
| 1 cm | 
| Mõõtühik | Pikkused | 
|---|---|
| nanomeeter | 6460000000.0 nm | 
| Mikromeeter | 6460000.0 µm | 
| Millimeeter | 6460.0 mm | 
| Sentimeeter | 646.0 cm | 
| Toll | 254.330708661 in | 
| Jalg | 21.1942257218 ft | 
| Õu | 7.0647419073 yd | 
| Meeter | 6.46 m | 
| Kilomeeter | 0.00646 km | 
| Miil | 0.0040140579 mi | 
| Meremiil | 0.003488121 nmi | 
