| 670 ft * | 30.48 cm | = 20421.6 cm | 
| 1 ft | 
| Natuurkundige eenheid | Lengte | 
|---|---|
| Nanometer | 2.04216e+11 nm | 
| Micrometer | 204216000.0 µm | 
| Millimeter | 204216.0 mm | 
| Centimeter | 20421.6 cm | 
| Inch | 8040.0 in | 
| Voet | 670.0 ft | 
| Yard | 223.333333333 yd | 
| Meter | 204.216 m | 
| Kilometer | 0.204216 km | 
| Mijl | 0.1268939394 mi | 
| Zeemijl | 0.1102678186 nmi | 
