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The feet per second to knots conversion is used to convert speed measurements from the imperial system (feet per second) to the nautical measurement system (knots). This conversion is particularly important in aviation, maritime navigation, and meteorology.
The calculator uses the conversion formula:
Where:
Explanation: One knot equals one nautical mile per hour, and since one nautical mile is 6,076.12 feet, the conversion factor is derived from the relationship between these units.
Details: Accurate speed conversion is essential for navigation, flight planning, weather reporting, and international communication where different measurement systems are used. Knots are the standard unit for maritime and aviation speeds worldwide.
Tips: Enter the speed value in feet per second. The value must be positive. The calculator will instantly convert it to knots with high precision.
Q1: Why is 1.68781 used as the conversion factor?
A: This factor comes from the definition of a knot (1 nautical mile per hour) and the fact that 1 nautical mile = 6,076.12 feet, and 1 hour = 3,600 seconds.
Q2: What is the difference between knots and miles per hour?
A: One knot equals approximately 1.15078 miles per hour. Knots are based on nautical miles while MPH are based on statute miles.
Q3: Where are knots commonly used?
A: Knots are primarily used in maritime navigation, aviation, meteorology, and any field involving navigation over water or air.
Q4: Can I convert knots back to feet per second?
A: Yes, simply multiply knots by 1.68781 to get feet per second: \( FT/S = Knots \times 1.68781 \).
Q5: What is a typical cruising speed in knots for ships and aircraft?
A: Commercial ships typically cruise at 20-25 knots, while commercial aircraft cruise at 450-550 knots.