| 0.4 mm * | 0.0393700787 in | = 0.0157480315 in | 
| 1 mm | 
| Natuurkundige eenheid | Lengtes | 
|---|---|
| Nanometer | 400000.0 nm | 
| Micrometer | 400.0 µm | 
| Millimeter | 0.4 mm | 
| Centimeter | 0.04 cm | 
| Inch | 0.0157480315 in | 
| Voet | 0.001312336 ft | 
| Yard | 0.0004374453 yd | 
| Meter | 0.0004 m | 
| Kilometer | 4e-07 km | 
| Mijl | 2.485e-07 mi | 
| Zeemijl | 2.16e-07 nmi | 
