| 399 cm * | 0.01 m | = 3.99 m | 
| 1 cm | 
| Måleenhet | Lengder | 
|---|---|
| Nanometer | 3990000000.0 nm | 
| Mikrometer | 3990000.0 µm | 
| Millimeter | 3990.0 mm | 
| Centimeter | 399.0 cm | 
| Tomme | 157.086614173 in | 
| Fot | 13.0905511811 ft | 
| Yard | 4.3635170604 yd | 
| Meter | 3.99 m | 
| Kilometer | 0.00399 km | 
| Engelsk mil | 0.0024792711 mi | 
| Nautisk mil | 0.0021544276 nmi | 
