| 631 cm * | 0.01 m | = 6.31 m | 
| 1 cm | 
| Units of measurement | Lengths | 
|---|---|
| Nanometre | 6310000000.0 nm | 
| Micrometre | 6310000.0 µm | 
| Millimetre | 6310.0 mm | 
| Centimetre | 631.0 cm | 
| Inch | 248.42519685 in | 
| Foot | 20.7020997375 ft | 
| Yard | 6.9006999125 yd | 
| Metre | 6.31 m | 
| Kilometre | 0.00631 km | 
| Mile | 0.0039208522 mi | 
| Nautical mile | 0.0034071274 nmi | 
