| 640 in * | 2.54 cm | = 1625.6 cm | 
| 1 in | 
| Fyzikálna jednotka | Jednotka dĺžky | 
|---|---|
| Nanometer | 16256000000.0 nm | 
| Mikrometer | 16256000.0 µm | 
| Milimeter | 16256.0 mm | 
| Centimeter | 1625.6 cm | 
| Palec | 640.0 in | 
| Stopa | 53.3333333333 ft | 
| Yard | 17.7777777778 yd | 
| Meter | 16.256 m | 
| Kilometer | 0.016256 km | 
| Míľa | 0.0101010101 mi | 
| Námorná míľa | 0.0087775378 nmi | 
