| 42.1 mm * | 0.0393700787 in | = 1.657480315 in | 
| 1 mm | 
| Unidad de medida | Longitud | 
|---|---|
| Nanómetro | 42100000.0 nm | 
| Micrómetro | 42100.0 µm | 
| Milímetro | 42.1 mm | 
| Centímetro | 4.21 cm | 
| Pulgada | 1.657480315 in | 
| Pie | 0.1381233596 ft | 
| Yarda | 0.0460411199 yd | 
| Metro | 0.0421 m | 
| Kilómetro | 4.21e-05 km | 
| Milla | 2.61597e-05 mi | 
| Milla náutica | 2.27322e-05 nmi | 
