| 684 cm * | 0.3937007874 in | = 269.291338583 in | 
| 1 cm | 
| Unidad de medida | Longitud | 
|---|---|
| Nanómetro | 6840000000.0 nm | 
| Micrómetro | 6840000.0 µm | 
| Milímetro | 6840.0 mm | 
| Centímetro | 684.0 cm | 
| Pulgada | 269.291338583 in | 
| Pie | 22.4409448819 ft | 
| Yarda | 7.4803149606 yd | 
| Metro | 6.84 m | 
| Kilómetro | 0.00684 km | 
| Milla | 0.004250179 mi | 
| Milla náutica | 0.0036933045 nmi | 
