| 646 cm * | 0.032808399 ft | = 21.1942257218 ft | 
| 1 cm | 
| Satuan | Panjang | 
|---|---|
| Nanometer | 6460000000.0 nm | 
| Mikrometer | 6460000.0 µm | 
| Milimeter | 6460.0 mm | 
| Sentimeter | 646.0 cm | 
| Inci | 254.330708662 in | 
| Kaki | 21.1942257218 ft | 
| Yard | 7.0647419073 yd | 
| Meter | 6.46 m | 
| Kilometer | 0.00646 km | 
| mil | 0.0040140579 mi | 
| Mil laut | 0.003488121 nmi | 
