| 3.9 mm * | 0.1 cm | = 0.39 cm | 
| 1 mm | 
| Fyzikálna jednotka | Jednotka dĺžky | 
|---|---|
| Nanometer | 3900000.0 nm | 
| Mikrometer | 3900.0 µm | 
| Milimeter | 3.9 mm | 
| Centimeter | 0.39 cm | 
| Palec | 0.1535433071 in | 
| Stopa | 0.0127952756 ft | 
| Yard | 0.0042650919 yd | 
| Meter | 0.0039 m | 
| Kilometer | 3.9e-06 km | 
| Míľa | 2.4233e-06 mi | 
| Námorná míľa | 2.1058e-06 nmi | 
