| 420 mm * | 0.1 cm | = 42.0 cm | 
| 1 mm | 
| Maßeinheit | Länge | 
|---|---|
| Nanometer | 420000000.0 nm | 
| Mikrometer | 420000.0 µm | 
| Millimeter | 420.0 mm | 
| Zentimeter | 42.0 cm | 
| Zoll | 16.5354330709 in | 
| Fuß | 1.3779527559 ft | 
| Yard | 0.4593175853 yd | 
| Meter | 0.42 m | 
| Kilometer | 0.00042 km | 
| Meile | 0.0002609759 mi | 
| Seemeile | 0.0002267819 nmi | 
