| 631 cm * | 0.3937007874 in | = 248.42519685 in | 
| 1 cm | 
| Mjerna jedinica | Dužina | 
|---|---|
| Nanometar | 6310000000.0 nm | 
| mikrometar | 6310000.0 µm | 
| Milimetar | 6310.0 mm | 
| Centimetar | 631.0 cm | 
| Palac | 248.42519685 in | 
| Stopa | 20.7020997375 ft | 
| Jard | 6.9006999125 yd | 
| Metar | 6.31 m | 
| Kilometar | 0.00631 km | 
| Milja | 0.0039208522 mi | 
| Nautička milja | 0.0034071274 nmi | 
