Bft – m/s – km/h ???
| Bft | Omschrijving | m/s | Knopen | km/u | m/h |
| 0 | Windstil | <0.2 | < 1 | < 1 | < 1 |
| 1 | Zwakke wind | 0.3 – 1.5 | 1 – 3 | 1 – 5 | 1 – 3 |
| 2 | Zwakke wind | 1.6 – 3.3 | 4 – 6 | 6 – 11 | 4 – 7 |
| 3 | Matige wind | 3.4 – 5.4 | 7 – 10 | 12 – 19 | 8 – 12 |
| 4 | Matige wind | 5.5 – 7.9 | 11 – 16 | 20 – 28 | 13 – 18 |
| 5 | Vrij krachtige wind | 8.0 – 10.7 | 17 – 21 | 29 – 38 | 19 – 24 |
| 6 | Krachtige wind | 10.8 – 13.8 | 22 – 27 | 39 – 49 | 25 – 31 |
| 7 | Harde wind | 13.9 – 17.1 | 28 – 33 | 50 – 61 | 32 – 38 |
| 8 | Stormachtige wind | 17.2 – 20.7 | 34 – 40 | 62 – 74 | 39 – 46 |
| 9 | Storm | 20.8 – 24.4 | 41 – 47 | 75 – 88 | 47 – 54 |
| 10 | Zware storm | 24.5 – 28.4 | 48 – 55 | 89 – 102 | 55 – 63 |
| 11 | Zeer zware storm | 28.5 – 32.6 | 56 – 63 | 102 – 117 | 64 – 74 |
| 12 | Orkaan | >32.6 | >63 | >117 | >74 |
ADMIN 