What Is This Tool?
This converter helps you change speed values from foot/second, an imperial unit often used in U.S. engineering and ballistics, into the knot (UK), the maritime and aviation speed unit used in the United Kingdom and internationally. It is useful for translating speeds between systems, especially in navigation and weather reports.
How to Use This Tool?
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Enter the speed value measured in foot/second (ft/s) into the input field
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Select foot/second as the original unit and knot (UK) as the target unit
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Click the convert button to view the speed expressed in kt (UK)
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Use the examples as guidance to verify your conversion
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Apply the converted speed in your maritime, aviation, or engineering tasks
Key Features
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Converts speed from foot/second (ft/s) to knot (UK) [kt (UK)]
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Uses precise conversion rate based on definitions of foot and nautical mile
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Supports applications in maritime, aviation, meteorology, and engineering
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Includes examples for quick reference
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Browser-based and easy to use without installation
Examples
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Convert 5 ft/s: 5 × 0.5921052632 = 2.960526316 kt (UK)
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Convert 10 ft/s: 10 × 0.5921052632 = 5.921052632 kt (UK)
Common Use Cases
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Specifying projectile velocities and fluid flow speeds with imperial units
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Reporting ship cruising speeds in nautical miles per hour
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Expressing aircraft groundspeed or airspeed over water routes
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Describing ocean currents and wind speeds for navigation and meteorology
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Converting engineering measurements involving speed in fluid dynamics
Tips & Best Practices
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Verify unit definitions when converting between measurement systems
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Use the exact conversion rate provided for consistency
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Be mindful of rounding when applying values in sensitive calculations
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Understand the context of the speed measurement to select appropriate units
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Use this tool for ease of communication in international maritime and aviation settings
Limitations
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Foot/second is based on the US customary foot, while knot (UK) uses the international nautical mile
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Differences may arise if other versions of feet or nautical miles are applied
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Rounding and precision can affect results depending on the context
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The tool does not account for conversions involving non-standard units
Frequently Asked Questions
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What is foot/second used for?
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Foot/second is often used in ballistics to specify projectile speeds, in U.S. engineering for air or fluid velocities, and in physics experiments using imperial units.
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Why convert foot/second to knot (UK)?
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Converting to knot (UK) standardizes speeds for maritime and aviation navigation, meteorology, and international transport, facilitating clear communication.
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Are there limitations when converting these speed units?
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Yes, differences in unit definitions and rounding can introduce slight variations, especially if alternative definitions of feet or nautical miles are used.
Key Terminology
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Foot/second [ft/s]
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A speed unit in the US customary and Imperial systems representing one foot traveled per second, exactly 0.3048 metres per second.
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Knot (UK) [kt (UK)]
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A speed unit equal to one nautical mile per hour as used in UK maritime and aviation contexts referring to the international nautical mile of 1,852 metres.
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Nautical Mile
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A unit of distance used in navigation equal to 1,852 metres, which is the basis for defining the knot (UK).