What Is This Tool?
This unit converter transforms speed values from foot/second, an imperial speed unit, into millimeter/hour, a metric unit used for very slow linear rates. It helps convert fast speeds into much slower rates relevant in various fields.
How to Use This Tool?
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Enter the speed value in foot/second (ft/s)
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Select the unit to convert to millimeter/hour (mm/h)
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Click the convert button to see the result
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Review the output expressed in millimeter/hour units
Key Features
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Converts speeds from foot/second (ft/s) to millimeter/hour (mm/h)
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Supports understanding across different measurement systems
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Includes common use cases and example conversions
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Browser-based and easy to operate
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Useful for fields like meteorology, engineering, and material sciences
Examples
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2 ft/s equals 2 × 1097280 = 2194560 mm/h
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0.5 ft/s equals 0.5 × 1097280 = 548640 mm/h
Common Use Cases
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Specifying projectile or muzzle velocities in ballistics and firearms using foot/second
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Measuring precipitation intensity where rainfall depth is expressed in millimeters per hour
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Calculating material deposition or corrosion rates over time in manufacturing
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Monitoring slow ground movements or subsidence in geotechnical engineering
Tips & Best Practices
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Ensure input values are accurate to avoid large errors after conversion
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Use this conversion primarily to translate fast speeds into very slow linear rates
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Interpret results carefully due to the large conversion factor involved
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Apply the tool in contexts like meteorology or engineering where differing speed scales need bridging
Limitations
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The large conversion factor makes this practical mostly for converting fast speeds to very slow rates
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Slight inaccuracies in foot/second inputs can cause significant discrepancies in millimeter/hour values
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Not suitable for comparing speeds that are close in magnitude due to scale differences
Frequently Asked Questions
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What does foot/second [ft/s] measure?
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Foot per second is a speed unit in the US customary and Imperial systems, defined as one foot traveled in one second, exactly 0.3048 metres per second.
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When is millimeter/hour [mm/h] used?
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Millimeter per hour is used to express very slow linear speeds, such as precipitation intensity, material deposition rates, or slow movements in engineering.
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Why use this conversion between ft/s and mm/h?
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To translate fast speeds in imperial units into extremely slow rates suitable for specific applications like rainfall measurement or material corrosion monitoring.
Key Terminology
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Foot/second [ft/s]
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A speed unit representing one foot traveled in one second, used in the US customary and Imperial systems.
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Millimeter/hour [mm/h]
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A speed unit indicating a length change of one millimeter occurring every hour, used for very slow motions or changes.
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Conversion Rate
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The factor used to convert one unit of speed into another; here, 1 ft/s equals 1,097,280 mm/h.