| 31.8 mm * | 0.1 cm | = 3.18 cm | 
| 1 mm | 
| Måttenhet | Längd | 
|---|---|
| Nanometer | 31800000.0 nm | 
| Mikrometer | 31800.0 µm | 
| Millimeter | 31.8 mm | 
| Centimeter | 3.18 cm | 
| Inch | 1.2519685039 in | 
| Fot | 0.1043307087 ft | 
| Yard | 0.0347769029 yd | 
| Meter | 0.0318 m | 
| Kilometer | 3.18e-05 km | 
| Engelsk mil | 1.97596e-05 mi | 
| Nautisk mil | 1.71706e-05 nmi | 
