| 22.1 mm * | 0.1 cm | = 2.21 cm | 
| 1 mm | 
| Natuurkundige eenheid | Lengtes | 
|---|---|
| Nanometer | 22100000.0 nm | 
| Micrometer | 22100.0 µm | 
| Millimeter | 22.1 mm | 
| Centimeter | 2.21 cm | 
| Inch | 0.8700787402 in | 
| Voet | 0.0725065617 ft | 
| Yard | 0.0241688539 yd | 
| Meter | 0.0221 m | 
| Kilometer | 2.21e-05 km | 
| Mijl | 1.37323e-05 mi | 
| Zeemijl | 1.1933e-05 nmi | 
