Beaufort Scale Formula:
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The Beaufort scale is an empirical measure that relates wind speed to observed conditions at sea or on land. It was developed in 1805 by Sir Francis Beaufort and provides a standardized way to estimate wind forces.
The calculator uses the Beaufort conversion formula:
Where:
Explanation: This formula provides a mathematical relationship between wind speed in knots and the corresponding Beaufort number, which represents wind force on a scale from 0 (calm) to 12 (hurricane).
Details: The Beaufort scale is widely used in maritime operations, aviation, meteorology, and outdoor activities to quickly assess wind conditions and their potential impacts without requiring precise instrumentation.
Tips: Enter wind speed in knots (nautical miles per hour). The value must be non-negative. The calculator will return the corresponding Beaufort number.
Q1: What is the range of Beaufort numbers?
A: The Beaufort scale ranges from 0 (calm, less than 1 knot) to 12 (hurricane, 64 knots or more).
Q2: How accurate is this conversion?
A: The formula provides a good approximation, but actual Beaufort assessments also consider observed sea or land conditions.
Q3: Can I use this for land-based wind measurements?
A: Yes, the Beaufort scale applies to both marine and land environments, though the observational criteria differ.
Q4: What are typical wind speeds for common Beaufort levels?
A: For example: Force 4 (11-16 knots) is a moderate breeze, Force 7 (28-33 knots) is a near gale.
Q5: Why is the Beaufort scale still used today?
A: It provides a quick, intuitive way to communicate wind conditions that doesn't require precise instrumentation or technical knowledge.