What Is This Tool?
This converter allows users to transform speed values from foot/hour (ft/h), an imperial unit used for very slow velocities, into millimeter/second (mm/s), a metric unit widely used in precise engineering and scientific applications. It simplifies the process of converting slow speed measurements into compatible metric terms.
How to Use This Tool?
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Enter the speed value in foot/hour (ft/h) into the input field
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Select foot/hour as the source unit and millimeter/second as the target unit
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Click the convert button to calculate the result
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View the converted speed in millimeter/second (mm/s)
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Use the output for engineering, geological, or monitoring purposes
Key Features
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Converts foot/hour speeds precisely into millimeter/second units
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Supports very low velocity measurements common in geology and industrial automation
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Browser-based tool requiring no installation
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Clear input and output fields for straightforward usage
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Provides conversion examples for user guidance
Examples
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Convert 10 ft/h: 10 × 0.0846666667 = 0.846666667 mm/s
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Convert 50 ft/h: 50 × 0.0846666667 = 4.233333335 mm/s
Common Use Cases
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Describing slow geological or glacial movement rates over hours or days
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Specifying slow actuator or conveyor speeds in industrial motion control
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Reporting settlement or drift rates in structural monitoring with hourly measurements
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Translating imperial slow speeds into metric units for precise engineering applications
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Setting feed rates for linear actuators and 3D printer heads with sub-millimeter accuracy
Tips & Best Practices
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Ensure input values represent average speed over the hour for accurate conversion
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Use high-precision instruments when measuring very slow velocities due to small conversion values
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Avoid rounding errors by using full decimal precision during conversion calculations
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Confirm consistent units to maintain clarity in engineering and scientific reports
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Cross-check converted values when applying in critical industrial or geological monitoring
Limitations
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Foot/hour unit applies only to very slow speeds; converted values in mm/s are very small
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Small magnitude of conversion factor can introduce rounding errors
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Assumes speed is constant throughout the hour, which may not reflect actual variations
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Requires precise instrumentation to measure and verify converted speeds accurately
Frequently Asked Questions
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What does one foot/hour represent?
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One foot/hour (ft/h) is an imperial speed unit indicating travel of one foot over the span of an hour, typically used for very slow speeds.
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Why convert foot/hour to millimeter/second?
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Converting to millimeter/second enables expressing slow imperial speeds in metric terms suitable for precise scientific and engineering measurements.
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Can I use this conversion for fast speeds?
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No, foot/hour is intended for very slow velocities. Using it for faster speeds is not appropriate and may cause inaccurate or cumbersome results.
Key Terminology
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Foot/hour (ft/h)
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An imperial unit of speed representing one foot traveled in one hour, typically used for describing very slow velocities.
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Millimeter/second (mm/s)
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A metric speed unit describing one millimeter traveled each second, commonly used in precision engineering and low-speed motion control.
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Conversion factor
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The numeric value (0.0846666667) used to convert speed from foot/hour to millimeter/second.