| 4000 mm * | 0.1 cm | = 400.0 cm | 
| 1 mm | 
| Eenhede van meting | Lengtes | 
|---|---|
| Nanometer | 4000000000.0 nm | 
| Mikrometer | 4000000.0 µm | 
| Millimeter | 4000.0 mm | 
| Sentimeter | 400.0 cm | 
| Duim | 157.480314961 in | 
| Voet | 13.1233595801 ft | 
| Jaart | 4.3744531934 yd | 
| Meter | 4.0 m | 
| Kilometer | 0.004 km | 
| Myl | 0.0024854848 mi | 
| Seemyl | 0.0021598272 nmi | 
