| 321 mm * | 0.0393700787 in | = 12.6377952756 in | 
| 1 mm | 
| Unidad de medida | Longitudes | 
|---|---|
| Nanómetro | 321000000.0 nm | 
| Micrómetro | 321000.0 µm | 
| Milímetro | 321.0 mm | 
| Centímetro | 32.1 cm | 
| Pulgada | 12.6377952756 in | 
| Pie | 1.0531496063 ft | 
| Yarda | 0.3510498688 yd | 
| Metro | 0.321 m | 
| Kilómetro | 0.000321 km | 
| Milla | 0.0001994602 mi | 
| Milla náutica | 0.0001733261 nmi | 
