What is the Beaufort Scale and How Does It Work?
The Beaufort scale is an empirical measure that relates wind speed to observed conditions at sea or on land, created in 1805 by Royal Navy officer Sir Francis Beaufort.
Each Beaufort number represents a specific speed range and observable environmental impacts. For instance, Force 8 represents gale winds (39–46 mph / 62–74 km/h) capable of breaking twigs, while Force 12 represents hurricane-force winds (73+ mph / 118+ km/h).
This tool converts effortlessly between knots, mph, km/h, and m/s, identifying the precise Beaufort force number. It is an essential reference for maritime navigation, aviation, and outdoor safety.
Practical significance: Conversion uses standard physical multipliers (1 knot = 1.151 mph = 1.852 km/h). The Beaufort scale remains an official reference for the World Meteorological Organization (WMO) and NOAA.