| 681 cm * | 0.032808399 ft | = 22.342519685 ft | 
| 1 cm | 
| Natuurkundige eenheid | Lengte-eenheid | 
|---|---|
| Nanometer | 6810000000.0 nm | 
| Micrometer | 6810000.0 µm | 
| Millimeter | 6810.0 mm | 
| Centimeter | 681.0 cm | 
| Inch | 268.110236221 in | 
| Voet | 22.342519685 ft | 
| Yard | 7.4475065617 yd | 
| Meter | 6.81 m | 
| Kilometer | 0.00681 km | 
| Mijl | 0.0042315378 mi | 
| Zeemijl | 0.0036771058 nmi | 
