| 681 km * | 0.6213711922 mi | = 423.153781914 mi | 
| 1 km | 
| Mõõtühik | Pikkusühiku | 
|---|---|
| nanomeeter | 6.81e+14 nm | 
| Mikromeeter | 6.81e+11 µm | 
| Millimeeter | 681000000.0 mm | 
| Sentimeeter | 68100000.0 cm | 
| Toll | 26811023.622 in | 
| Jalg | 2234251.9685 ft | 
| Õu | 744750.656168 yd | 
| Meeter | 681000.0 m | 
| Kilomeeter | 681.0 km | 
| Miil | 423.153781914 mi | 
| Meremiil | 367.710583153 nmi | 
