| 21 m * | 3.280839895 ft | = 68.8976377953 ft |
| 1 m |
| Natuurkundige eenheid | Lengte |
|---|---|
| Nanometer | 21000000000.0 nm |
| Micrometer | 21000000.0 µm |
| Millimeter | 21000.0 mm |
| Centimeter | 2100.0 cm |
| Inch | 826.771653543 in |
| Voet | 68.8976377953 ft |
| Yard | 22.9658792651 yd |
| Meter | 21.0 m |
| Kilometer | 0.021 km |
| Mijl | 0.013048795 mi |
| Zeemijl | 0.0113390929 nmi |
