| 123 mm * | 0.0393700787 in | = 4.842519685 in | 
| 1 mm | 
| Eenhede van meting | Lengtes | 
|---|---|
| Nanometer | 123000000.0 nm | 
| Mikrometer | 123000.0 µm | 
| Millimeter | 123.0 mm | 
| Sentimeter | 12.3 cm | 
| Duim | 4.842519685 in | 
| Voet | 0.4035433071 ft | 
| Jaart | 0.1345144357 yd | 
| Meter | 0.123 m | 
| Kilometer | 0.000123 km | 
| Myl | 7.64287e-05 mi | 
| Seemyl | 6.64147e-05 nmi | 
