| 666 km * | 0.6213711922 mi | = 413.83321403 mi | 
| 1 km | 
| Fyzikálna jednotka | Jednotka dĺžky | 
|---|---|
| Nanometer | 6.66e+14 nm | 
| Mikrometer | 6.66e+11 µm | 
| Milimeter | 666000000.0 mm | 
| Centimeter | 66600000.0 cm | 
| Palec | 26220472.4409 in | 
| Stopa | 2185039.37008 ft | 
| Yard | 728346.456693 yd | 
| Meter | 666000.0 m | 
| Kilometer | 666.0 km | 
| Míľa | 413.83321403 mi | 
| Námorná míľa | 359.611231101 nmi | 
