| 221 cm * | 0.032808399 ft | = 7.250656168 ft | 
| 1 cm | 
| Natuurkundige eenheid | Lengte | 
|---|---|
| Nanometer | 2210000000.0 nm | 
| Micrometer | 2210000.0 µm | 
| Millimeter | 2210.0 mm | 
| Centimeter | 221.0 cm | 
| Inch | 87.0078740158 in | 
| Voet | 7.250656168 ft | 
| Yard | 2.4168853893 yd | 
| Meter | 2.21 m | 
| Kilometer | 0.00221 km | 
| Mijl | 0.0013732303 mi | 
| Zeemijl | 0.0011933045 nmi | 
