| 80.9 mm * | 0.1 cm | = 8.09 cm | 
| 1 mm | 
| Units of measurement | Unit of length | 
|---|---|
| Nanometre | 80900000.0 nm | 
| Micrometre | 80900.0 µm | 
| Millimetre | 80.9 mm | 
| Centimetre | 8.09 cm | 
| Inch | 3.1850393701 in | 
| Foot | 0.2654199475 ft | 
| Yard | 0.0884733158 yd | 
| Metre | 0.0809 m | 
| Kilometre | 8.09e-05 km | 
| Mile | 5.02689e-05 mi | 
| Nautical mile | 4.36825e-05 nmi | 
