| 688 cm * | 0.032808399 ft | = 22.5721784777 ft | 
| 1 cm | 
| Mõõtühik | Pikkusühiku | 
|---|---|
| nanomeeter | 6880000000.0 nm | 
| Mikromeeter | 6880000.0 µm | 
| Millimeeter | 6880.0 mm | 
| Sentimeeter | 688.0 cm | 
| Toll | 270.866141733 in | 
| Jalg | 22.5721784777 ft | 
| Õu | 7.5240594926 yd | 
| Meeter | 6.88 m | 
| Kilomeeter | 0.00688 km | 
| Miil | 0.0042750338 mi | 
| Meremiil | 0.0037149028 nmi | 
