| 666 cm * | 0.032808399 ft | = 21.8503937008 ft | 
| 1 cm | 
| Eenhede van meting | Lengtes | 
|---|---|
| Nanometer | 6660000000.0 nm | 
| Mikrometer | 6660000.0 µm | 
| Millimeter | 6660.0 mm | 
| Sentimeter | 666.0 cm | 
| Duim | 262.20472441 in | 
| Voet | 21.8503937008 ft | 
| Jaart | 7.2834645669 yd | 
| Meter | 6.66 m | 
| Kilometer | 0.00666 km | 
| Myl | 0.0041383321 mi | 
| Seemyl | 0.0035961123 nmi | 
