| 421 cm * | 0.032808399 ft | = 13.812335958 ft | 
| 1 cm | 
| Units of measurement | Length | 
|---|---|
| Nanometre | 4210000000.0 nm | 
| Micrometre | 4210000.0 µm | 
| Millimetre | 4210.0 mm | 
| Centimetre | 421.0 cm | 
| Inch | 165.748031496 in | 
| Foot | 13.812335958 ft | 
| Yard | 4.604111986 yd | 
| Metre | 4.21 m | 
| Kilometre | 0.00421 km | 
| Mile | 0.0026159727 mi | 
| Nautical mile | 0.0022732181 nmi | 
