| 31 km * | 0.6213711922 mi | = 19.2625069594 mi | 
| 1 km | 
| Unità | Tul | 
|---|---|
| Nanometru | 3.1e+13 nm | 
| Mikrometru | 31000000000.0 µm | 
| Millimetru | 31000000.0 mm | 
| ċentimetru | 3100000.0 cm | 
| Pulzier | 1220472.44094 in | 
| Piedi | 101706.036745 ft | 
| Yard | 33902.0122485 yd | 
| Metru | 31000.0 m | 
| Kilometru | 31.0 km | 
| Mil | 19.2625069594 mi | 
| Mil nawtiku | 16.7386609071 nmi | 
