Convert wind speed or boat speed from knots to miles per hour. Commonly needed in the US where mph is the everyday speed unit.
| Knots (kn) | Miles per hour (mph) |
|---|---|
| 1 | 1.15 |
| 2 | 2.3 |
| 3 | 3.45 |
| 4 | 4.6 |
| 5 | 5.75 |
| 6 | 6.9 |
| 7 | 8.06 |
| 8 | 9.21 |
| 9 | 10.36 |
| 10 | 11.51 |
| 12 | 13.81 |
| 14 | 16.11 |
| 15 | 17.26 |
| 16 | 18.41 |
| 18 | 20.71 |
| 20 | 23.02 |
| 22 | 25.32 |
| 25 | 28.77 |
| 28 | 32.22 |
| 30 | 34.52 |
| 35 | 40.28 |
| 40 | 46.03 |
| 45 | 51.79 |
| 50 | 57.54 |
One knot equals approximately 1.151 miles per hour. In the United States, wind speed is sometimes reported in mph rather than knots, which can cause confusion when reading marine forecasts (which always use knots).
A 20-knot wind is about 23 mph. When American riders talk about "30 mph winds," that's roughly 26 knots.
Understanding this conversion helps you interpret forecasts correctly and choose the right gear size.
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