| 23.1 cm * | 0.3937007874 in | = 9.094488189 in | 
| 1 cm | 
| Natuurkundige eenheid | Lengte-eenheid | 
|---|---|
| Nanometer | 231000000.0 nm | 
| Micrometer | 231000.0 µm | 
| Millimeter | 231.0 mm | 
| Centimeter | 23.1 cm | 
| Inch | 9.094488189 in | 
| Voet | 0.7578740157 ft | 
| Yard | 0.2526246719 yd | 
| Meter | 0.231 m | 
| Kilometer | 0.000231 km | 
| Mijl | 0.0001435367 mi | 
| Zeemijl | 0.00012473 nmi | 
