| 6.8 mm * | 0.0393700787 in | = 0.2677165354 in | 
| 1 mm | 
| Natuurkundige eenheid | Lengte-eenheid | 
|---|---|
| Nanometer | 6800000.0 nm | 
| Micrometer | 6800.0 µm | 
| Millimeter | 6.8 mm | 
| Centimeter | 0.68 cm | 
| Inch | 0.2677165354 in | 
| Voet | 0.0223097113 ft | 
| Yard | 0.0074365704 yd | 
| Meter | 0.0068 m | 
| Kilometer | 6.8e-06 km | 
| Mijl | 4.2253e-06 mi | 
| Zeemijl | 3.6717e-06 nmi | 
