| 521 m * | 3.280839895 ft | = 1709.3175853 ft | 
| 1 m | 
| Mjerna jedinica | Duljine | 
|---|---|
| Nanometar | 5.21e+11 nm | 
| mikrometar | 521000000.0 µm | 
| Milimetar | 521000.0 mm | 
| Centimetar | 52100.0 cm | 
| Palac | 20511.8110236 in | 
| Stopa | 1709.3175853 ft | 
| Jard | 569.772528434 yd | 
| Metar | 521.0 m | 
| Kilometar | 0.521 km | 
| Milja | 0.3237343912 mi | 
| Nautička milja | 0.2813174946 nmi | 
