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| km/h | mph | Context |
|---|---|---|
| 10 | 6.2 | Gentle breeze |
| 30 | 18.6 | Fresh breeze |
| 50 | 31.1 | Strong wind / urban speed limit |
| 80 | 49.7 | Gale |
| 100 | 62.1 | Highway speed / storm-force gust |
| 120 | 74.6 | Hurricane threshold (119 km/h) |
| m/s | km/h | Beaufort context |
|---|---|---|
| 2 | 7.2 | Light breeze |
| 5 | 18.0 | Gentle breeze |
| 10 | 36.0 | Fresh breeze |
| 17 | 61.2 | Gale |
| 25 | 90.0 | Storm |
| 33 | 118.8 | Hurricane threshold |
Kilometers per hour (km/h) is the standard wind speed unit used in most countries worldwide, while miles per hour (mph) is primarily used in the United States and United Kingdom.
Kilometres per hour and miles per hour are the two dominant units for both road speeds and wind speeds, split largely along the same geographic lines as the temperature scales: most of the world reports wind in km/h (or metres per second), while the US and UK often use mph. The conversion is a straightforward fixed ratio because both measure the same thing, distance over time. Knowing the equivalent matters when you are reading an overseas forecast, judging whether a wind gust is dangerous, or interpreting a weather warning issued in unfamiliar units. This tool converts instantly and shows where the speed sits on the Beaufort scale.
To convert m/s to km/h, divide by 1.609. This tool instantly performs that calculation, helping you interpret wind speeds across different measurement systems and weather reports.