| 18.1 ft * | 30.48 cm | = 551.688 cm | 
| 1 ft | 
| Merska enota | Dolžina | 
|---|---|
| Nanometer | 5516880000.0 nm | 
| Mikrometer | 5516880.0 µm | 
| Milimeter | 5516.88 mm | 
| Centimeter | 551.688 cm | 
| Palec | 217.2 in | 
| Čevelj | 18.1 ft | 
| Jard | 6.0333333333 yd | 
| Meter | 5.51688 m | 
| Kilometer | 0.00551688 km | 
| Mile | 0.0034280303 mi | 
| navtične milje | 0.0029788769 nmi | 
