| 21 km * | 0.6213711922 mi | = 13.048795037 mi |
| 1 km |
| Mõõtühik | Pikkusühiku |
|---|---|
| nanomeeter | 2.1e+13 nm |
| Mikromeeter | 21000000000.0 µm |
| Millimeeter | 21000000.0 mm |
| Sentimeeter | 2100000.0 cm |
| Toll | 826771.653543 in |
| Jalg | 68897.6377953 ft |
| Õu | 22965.8792651 yd |
| Meeter | 21000.0 m |
| Kilomeeter | 21.0 km |
| Miil | 13.048795037 mi |
| Meremiil | 11.3390928726 nmi |
