| 4200 mm * | 0.1 cm | = 420.0 cm | 
| 1 mm | 
| Unidad de medida | Longitudes | 
|---|---|
| Nanómetro | 4200000000.0 nm | 
| Micrómetro | 4200000.0 µm | 
| Milímetro | 4200.0 mm | 
| Centímetro | 420.0 cm | 
| Pulgada | 165.354330709 in | 
| Pie | 13.7795275591 ft | 
| Yarda | 4.593175853 yd | 
| Metro | 4.2 m | 
| Kilómetro | 0.0042 km | 
| Milla | 0.002609759 mi | 
| Milla náutica | 0.0022678186 nmi | 
