Beaufort Wind Scale Lookup
Beaufort 0-12: from "calm" (0 mph) to "hurricane" (>72 mph).
Result
Beaufort 6
Strong breeze
25 mph (21.7 kn).
- Wind speed25 mph
- Knots21.72
- Beaufort #6
- DescriptionStrong breeze
Step-by-step
- Look up 25 mph in Beaufort table.
- Result: 6 (Strong breeze).
How to use this calculator
- Enter wind speed in mph.
- Read Beaufort number + name.
About this calculator
Admiral Francis Beaufort's 1805 scale: empirical wind force from "calm" (0) to "hurricane" (12), based on observable effects on land and sea. Useful when no anemometer — you can guess Beaufort number from waves, smoke, leaves, branches. 0 calm; 4 small branches move; 7 whole trees in motion; 10 trees uprooted; 12 widespread devastation.
Frequently asked
Originally 12 covered all practical sea states. Extensions to 17 added later for tropical cyclones.
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