| 669 cm * | 0.032808399 ft | = 21.9488188976 ft | 
| 1 cm | 
| Mjerna jedinica | Duljine | 
|---|---|
| Nanometar | 6690000000.0 nm | 
| mikrometar | 6690000.0 µm | 
| Milimetar | 6690.0 mm | 
| Centimetar | 669.0 cm | 
| Palac | 263.385826772 in | 
| Stopa | 21.9488188976 ft | 
| Jard | 7.3162729659 yd | 
| Metar | 6.69 m | 
| Kilometar | 0.00669 km | 
| Milja | 0.0041569733 mi | 
| Nautička milja | 0.003612311 nmi | 
