| 68.4 km * | 0.6213711922 mi | = 42.501789549 mi | 
| 1 km | 
| Natuurkundige eenheid | Lengte-eenheid | 
|---|---|
| Nanometer | 6.84e+13 nm | 
| Micrometer | 68400000000.0 µm | 
| Millimeter | 68400000.0 mm | 
| Centimeter | 6840000.0 cm | 
| Inch | 2692913.38583 in | 
| Voet | 224409.448819 ft | 
| Yard | 74803.1496063 yd | 
| Meter | 68400.0 m | 
| Kilometer | 68.4 km | 
| Mijl | 42.501789549 mi | 
| Zeemijl | 36.9330453564 nmi | 
