| 421 cm * | 0.032808399 ft | = 13.812335958 ft | 
| 1 cm | 
| Natuurkundige eenheid | Lengte | 
|---|---|
| Nanometer | 4210000000.0 nm | 
| Micrometer | 4210000.0 µm | 
| Millimeter | 4210.0 mm | 
| Centimeter | 421.0 cm | 
| Inch | 165.748031496 in | 
| Voet | 13.812335958 ft | 
| Yard | 4.604111986 yd | 
| Meter | 4.21 m | 
| Kilometer | 0.00421 km | 
| Mijl | 0.0026159727 mi | 
| Zeemijl | 0.0022732181 nmi | 
