| 21 m * | 3.280839895 ft | = 68.8976377953 ft |
| 1 m |
| Eenhede van meting | Lengtes |
|---|---|
| Nanometer | 21000000000.0 nm |
| Mikrometer | 21000000.0 µm |
| Millimeter | 21000.0 mm |
| Sentimeter | 2100.0 cm |
| Duim | 826.771653543 in |
| Voet | 68.8976377953 ft |
| Jaart | 22.9658792651 yd |
| Meter | 21.0 m |
| Kilometer | 0.021 km |
| Myl | 0.013048795 mi |
| Seemyl | 0.0113390929 nmi |
