| 688 km * | 0.6213711922 mi | = 427.503380259 mi |
| 1 km |
| Natuurkundige eenheid | Lengte-eenheid |
|---|---|
| Nanometer | 6.88e+14 nm |
| Micrometer | 6.88e+11 µm |
| Millimeter | 688000000.0 mm |
| Centimeter | 68800000.0 cm |
| Inch | 27086614.1732 in |
| Voet | 2257217.84777 ft |
| Yard | 752405.949256 yd |
| Meter | 688000.0 m |
| Kilometer | 688.0 km |
| Mijl | 427.503380259 mi |
| Zeemijl | 371.490280778 nmi |
