| 81 cm * | 0.01 m | = 0.81 m | 
| 1 cm | 
| Units of measurement | Lengths | 
|---|---|
| Nanometre | 810000000.0 nm | 
| Micrometre | 810000.0 µm | 
| Millimetre | 810.0 mm | 
| Centimetre | 81.0 cm | 
| Inch | 31.8897637795 in | 
| Foot | 2.657480315 ft | 
| Yard | 0.8858267717 yd | 
| Metre | 0.81 m | 
| Kilometre | 0.00081 km | 
| Mile | 0.0005033107 mi | 
| Nautical mile | 0.000437365 nmi | 
