| 820 km * | 0.6213711922 mi | = 509.524377635 mi | 
| 1 km | 
| Måleenhed | Længde | 
|---|---|
| Nanometer | 8.2e+14 nm | 
| Mikrometer | 8.2e+11 µm | 
| Nillimeter | 820000000.0 mm | 
| Centimeter | 82000000.0 cm | 
| Tomme | 32283464.5669 in | 
| Fod | 2690288.71391 ft | 
| Yard | 896762.904637 yd | 
| Meter | 820000.0 m | 
| Kilometer | 820.0 km | 
| Nil | 509.524377635 mi | 
| Sømil | 442.764578834 nmi | 
