What Is This Tool?
This tool converts speed measurements from foot per second (ft/s), a US customary and Imperial unit, to millimeter per second (mm/s), a metric unit. It helps translate speeds used in various engineering and physics contexts into a finer metric scale.
How to Use This Tool?
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Enter the speed value in foot per second (ft/s).
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Select foot/second as the input unit and millimeter/second as the output unit.
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Click the convert button to get the result in millimeter/second.
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Use the converted values for engineering, manufacturing, or monitoring tasks.
Key Features
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Converts speeds from foot/second to millimeter/second accurately.
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Supports applications in ballistics, HVAC, and precision motion control.
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Easy to use with a clear input and output interface.
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Browser-based and accessible without software installation.
Examples
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2 ft/s converts to 609.6 mm/s.
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0.5 ft/s converts to 152.4 mm/s.
Common Use Cases
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Specifying projectile or muzzle velocities in ballistics.
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Reporting air or fluid velocities in HVAC and wind tunnel testing.
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Setting feed rates for 3D printer heads and linear actuators.
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Monitoring vibration velocities in rotating machinery.
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Performing precise physics and engineering speed calculations.
Tips & Best Practices
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Double-check units before converting to maintain consistency.
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Be mindful of numerical precision when working with very high or low speeds.
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Use this conversion for applications requiring detailed speed resolution.
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Ensure your input values are accurate to avoid compounding errors.
Limitations
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Conversion between foot/second and millimeter/second spans several orders of magnitude, requiring attention to precision.
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Foot/second is based on US customary and Imperial units, while millimeter/second belongs to the metric system.
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Users should confirm unit consistency during calculations to prevent errors.
Frequently Asked Questions
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What is the exact conversion rate from foot/second to millimeter/second?
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1 foot/second equals exactly 304.8 millimeter/second.
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In which fields is converting ft/s to mm/s commonly used?
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It is widely used in ballistics, HVAC engineering, precision motion control, manufacturing automation, and machinery condition monitoring.
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Why should I be careful about precision when converting these units?
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Because the units differ by several orders of magnitude, rounding errors can affect accuracy when converting very high or low speed values.
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 in one second; exactly 0.3048 meters per second.
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Millimeter/second [mm/s]
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A derived metric speed unit equal to one millimeter traveled in one second, commonly used for low velocities and precise motion control.
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Conversion Rate
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The factor used to translate a speed value from foot/second to millimeter/second, which is 304.8.