| 52.1 mm * | 0.1 cm | = 5.21 cm | 
| 1 mm | 
| Units of measurement | Length | 
|---|---|
| Nanometre | 52100000.0 nm | 
| Micrometre | 52100.0 µm | 
| Millimetre | 52.1 mm | 
| Centimetre | 5.21 cm | 
| Inch | 2.0511811024 in | 
| Foot | 0.1709317585 ft | 
| Yard | 0.0569772528 yd | 
| Metre | 0.0521 m | 
| Kilometre | 5.21e-05 km | 
| Mile | 3.23734e-05 mi | 
| Nautical mile | 2.81317e-05 nmi | 
