| mph | km/h | Context |
|---|---|---|
| 5 | 8.0 | Light air |
| 20 | 32.2 | Fresh breeze |
| 40 | 64.4 | Gale-force gust |
| 60 | 96.6 | Storm |
| 74 | 119.1 | Hurricane threshold |
| 100 | 160.9 | Violent storm |
Miles per hour (mph) is commonly used in the United States and the UK, while kilometers per hour (km/h) is used in most other countries. Converting between these units is essential for understanding global weather reports and forecasts.
Converting miles per hour to kilometres per hour is essential for anyone reading US or UK wind reports while thinking in metric, or vice versa. Because both units measure speed, the conversion is a single fixed multiplier with no offset. The number matters most around weather thresholds: a hurricane begins at 74 mph, which is 119 km/h, and storm and gale warnings are issued at specific speeds that look very different depending on the unit. This converter gives an instant, accurate result and places the speed on the Beaufort scale so you know what the wind will actually do.
To convert mph to km/h, multiply by 1.609. This tool performs that calculation instantly and helps you understand wind speeds across different measurement systems.