| 642 mm * | 0.1 cm | = 64.2 cm | 
| 1 mm | 
| Fyzikálna jednotka | Dĺžka | 
|---|---|
| Nanometer | 642000000.0 nm | 
| Mikrometer | 642000.0 µm | 
| Milimeter | 642.0 mm | 
| Centimeter | 64.2 cm | 
| Palec | 25.2755905512 in | 
| Stopa | 2.1062992126 ft | 
| Yard | 0.7020997375 yd | 
| Meter | 0.642 m | 
| Kilometer | 0.000642 km | 
| Míľa | 0.0003989203 mi | 
| Námorná míľa | 0.0003466523 nmi | 
