| 660 mm * | 0.0393700787 in | = 25.9842519685 in | 
| 1 mm | 
| Eenhede van meting | Lengte | 
|---|---|
| Nanometer | 660000000.0 nm | 
| Mikrometer | 660000.0 µm | 
| Millimeter | 660.0 mm | 
| Sentimeter | 66.0 cm | 
| Duim | 25.9842519685 in | 
| Voet | 2.1653543307 ft | 
| Jaart | 0.7217847769 yd | 
| Meter | 0.66 m | 
| Kilometer | 0.00066 km | 
| Myl | 0.000410105 mi | 
| Seemyl | 0.0003563715 nmi | 
