| 400 mm * | 0.1 cm | = 40.0 cm | 
| 1 mm | 
| Måttenhet | Längdenhet | 
|---|---|
| Nanometer | 400000000.0 nm | 
| Mikrometer | 400000.0 µm | 
| Millimeter | 400.0 mm | 
| Centimeter | 40.0 cm | 
| Inch | 15.7480314961 in | 
| Fot | 1.312335958 ft | 
| Yard | 0.4374453193 yd | 
| Meter | 0.4 m | 
| Kilometer | 0.0004 km | 
| Engelsk mil | 0.0002485485 mi | 
| Nautisk mil | 0.0002159827 nmi | 
