| 31 in * | 0.0254 m | = 0.7874 m | 
| 1 in | 
| Natuurkundige eenheid | Lengtes | 
|---|---|
| Nanometer | 787400000.0 nm | 
| Micrometer | 787400.0 µm | 
| Millimeter | 787.4 mm | 
| Centimeter | 78.74 cm | 
| Inch | 31.0 in | 
| Voet | 2.5833333333 ft | 
| Yard | 0.8611111111 yd | 
| Meter | 0.7874 m | 
| Kilometer | 0.0007874 km | 
| Mijl | 0.0004892677 mi | 
| Zeemijl | 0.000425162 nmi | 
