21 ft * | 12.0 in | = 252.0 in |
1 ft |
Natuurkundige eenheid | Lengte |
---|---|
Nanometer | 6400800000.0 nm |
Micrometer | 6400800.0 µm |
Millimeter | 6400.8 mm |
Centimeter | 640.08 cm |
Inch | 252.0 in |
Voet | 21.0 ft |
Yard | 7.0 yd |
Meter | 6.4008 m |
Kilometer | 0.0064008 km |
Mijl | 0.0039772727 mi |
Zeemijl | 0.0034561555 nmi |