| 8.1 cm * | 0.3937007874 in | = 3.188976378 in | 
| 1 cm | 
| Mjerna jedinica | Dužina | 
|---|---|
| Nanometar | 81000000.0 nm | 
| mikrometar | 81000.0 µm | 
| Milimetar | 81.0 mm | 
| Centimetar | 8.1 cm | 
| Palac | 3.188976378 in | 
| Stopa | 0.2657480315 ft | 
| Jard | 0.0885826772 yd | 
| Metar | 0.081 m | 
| Kilometar | 8.1e-05 km | 
| Milja | 5.03311e-05 mi | 
| Nautička milja | 4.37365e-05 nmi | 
