Enter wind speed in common units to see Beaufort force, m/s, km/h, mph, and knots.
Convert wind speed to Beaufort force with independent unit checks, force range, label and gust-scenario comparison.
The Beaufort scale groups wind speeds into descriptive force bands from calm through hurricane-force conditions. The converted m/s, km/h, mph and knots describe the same entered speed, while the force number is the category that contains that speed.
The Beaufort scale maps a range of sustained wind speeds to a descriptive force number. The force number is not another wind-speed unit, so converting a measurement to Beaufort should preserve the original speed and unit beside the category.
Weather products may report sustained winds, short-duration gusts or other averages. Beaufort descriptions are normally interpreted from sustained wind ranges, so do not replace a sustained value with a peak gust without labeling the difference.
Values near a category threshold can move between adjacent Beaufort forces because of measurement precision, unit conversion and rounding. Compare the unrounded converted speed with the exact boundary rather than rounding first and then classifying.
Terrain, buildings, waves, vegetation, exposure and local warning criteria change the practical effects of a given wind speed. The scale is descriptive; official local warnings and operational limits remain separate sources.
Convert the source speed into a second common unit and verify it still falls inside the corresponding Beaufort range. This catches knots-versus-mph mistakes and shows whether a borderline result is being shifted by display rounding.
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