| 684 m * | 3.280839895 ft | = 2244.09448819 ft | 
| 1 m | 
| Natuurkundige eenheid | Lengtes | 
|---|---|
| Nanometer | 6.84e+11 nm | 
| Micrometer | 684000000.0 µm | 
| Millimeter | 684000.0 mm | 
| Centimeter | 68400.0 cm | 
| Inch | 26929.1338583 in | 
| Voet | 2244.09448819 ft | 
| Yard | 748.031496063 yd | 
| Meter | 684.0 m | 
| Kilometer | 0.684 km | 
| Mijl | 0.4250178955 mi | 
| Zeemijl | 0.3693304536 nmi | 
