| 840 cm * | 0.3937007874 in | = 330.708661417 in | 
| 1 cm | 
| Måleenhet | Lengde | 
|---|---|
| Nanometer | 8400000000.0 nm | 
| Mikrometer | 8400000.0 µm | 
| Millimeter | 8400.0 mm | 
| Centimeter | 840.0 cm | 
| Tomme | 330.708661417 in | 
| Fot | 27.5590551181 ft | 
| Yard | 9.186351706 yd | 
| Meter | 8.4 m | 
| Kilometer | 0.0084 km | 
| Engelsk mil | 0.005219518 mi | 
| Nautisk mil | 0.0045356371 nmi | 
