| 661 cm * | 0.3937007874 in | = 260.236220472 in | 
| 1 cm | 
| Matavimo vienetas | Ilgis | 
|---|---|
| Nanometras | 6610000000.0 nm | 
| Mikrometras | 6610000.0 µm | 
| Milimetras | 6610.0 mm | 
| Centimetras | 661.0 cm | 
| Colis | 260.236220472 in | 
| Pėda | 21.686351706 ft | 
| Yard | 7.228783902 yd | 
| Metras | 6.61 m | 
| Kilometras | 0.00661 km | 
| Mylia | 0.0041072636 mi | 
| Jūrmylė | 0.0035691145 nmi | 
