| 2.1 cm * | 0.01 m | = 0.021 m | 
| 1 cm | 
| Maßeinheit | Längenmaß | 
|---|---|
| Nanometer | 21000000.0 nm | 
| Mikrometer | 21000.0 µm | 
| Millimeter | 21.0 mm | 
| Zentimeter | 2.1 cm | 
| Zoll | 0.8267716535 in | 
| Fuß | 0.0688976378 ft | 
| Yard | 0.0229658793 yd | 
| Meter | 0.021 m | 
| Kilometer | 2.1e-05 km | 
| Meile | 1.30488e-05 mi | 
| Seemeile | 1.13391e-05 nmi | 
