| 311 mm * | 0.1 cm | = 31.1 cm | 
| 1 mm | 
| Natuurkundige eenheid | Lengtes | 
|---|---|
| Nanometer | 311000000.0 nm | 
| Micrometer | 311000.0 µm | 
| Millimeter | 311.0 mm | 
| Centimeter | 31.1 cm | 
| Inch | 12.2440944882 in | 
| Voet | 1.0203412073 ft | 
| Yard | 0.3401137358 yd | 
| Meter | 0.311 m | 
| Kilometer | 0.000311 km | 
| Mijl | 0.0001932464 mi | 
| Zeemijl | 0.0001679266 nmi | 
