| 1240 km * | 0.6213711922 mi | = 770.500278374 mi | 
| 1 km | 
| Måleenhed | Længde | 
|---|---|
| Nanometer | 1.24e+15 nm | 
| Mikrometer | 1.24e+12 µm | 
| Nillimeter | 1240000000.0 mm | 
| Centimeter | 124000000.0 cm | 
| Tomme | 48818897.6378 in | 
| Fod | 4068241.46982 ft | 
| Yard | 1356080.48994 yd | 
| Meter | 1240000.0 m | 
| Kilometer | 1240.0 km | 
| Nil | 770.500278374 mi | 
| Sømil | 669.546436285 nmi | 
