| 678 cm * | 0.3937007874 in | = 266.929133858 in | 
| 1 cm | 
| Jednostka miary | Długość | 
|---|---|
| Nanometr | 6780000000.0 nm | 
| Mikrometr | 6780000.0 µm | 
| Milimetr | 6780.0 mm | 
| Centymetr | 678.0 cm | 
| Cal | 266.929133858 in | 
| Stopa | 22.2440944882 ft | 
| Jard | 7.4146981627 yd | 
| Metr | 6.78 m | 
| Kilometr | 0.00678 km | 
| Mila | 0.0042128967 mi | 
| Mila morska | 0.0036609071 nmi | 
