Beaufort Scale Reference

Summary

Look up all 13 Beaufort wind force levels — wind speeds in knots, mph, and km/h — plus sea state and land effect descriptions, with a live speed-to-force converter.

How it works

1. Browse the full Beaufort scale table showing all 13 force levels.
2. Use the unit selector to display wind speeds in knots, mph, or km/h.
3. Enter a wind speed into the lookup tool to find the matching Beaufort force.
4. Click any row to expand it and read the full sea and land effect descriptions.
5. Use the search box to filter rows by force number, name, or description keyword.

Use cases

• Interpret Beaufort wind forecasts when planning offshore or coastal passages.
• Cross-reference anemometer readings with observable sea and land conditions.
• Study for maritime officer or yacht master certification exams.
• Brief crew on expected conditions using standardized Beaufort terminology.
• Convert between knot, mph, and km/h wind speed readings in the field.
• Assess whether recorded wind observations match expected wave development.
• Teach new sailors and weather enthusiasts wind force classifications.
• Calibrate personal expectations before entering unfamiliar wind regimes.

Frequently Asked Questions