Foot per Hour to Millimeter per Second
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How to Convert Foot per Hour to Millimeter per Second
To ft/s: ÷ 3,600. To mph: ÷ 5,280. To m/s: × 0.000085.
1 ft/h = 0.000085 m/s = 0.0003048 km/h = 0.3048 m/h.
For example, 1 Foot per Hour (ft/h) = 0.08466666667 Millimeter per Second (mm/s).
Foot per Hour to Millimeter per Second — Common Values
| Foot per Hour (ft/h) | Millimeter per Second (mm/s) |
|---|---|
| 0.1 | 0.008466666667 |
| 0.5 | 0.04233333334 |
| 1 | 0.08466666667 |
| 2 | 0.1693333333 |
| 5 | 0.4233333333 |
| 10 | 0.8466666667 |
| 25 | 2.116666667 |
| 50 | 4.233333334 |
| 100 | 8.466666667 |
| 500 | 42.33333333 |
| 1000 | 84.66666667 |
About Foot per Hour (ft/h)
Foot per hour measures distance in feet traveled over one hour. Used for very slow movements in imperial units.
1 ft/h = 0.000085 m/s = 0.0003048 km/h = 0.3048 m/h.
To ft/s: ÷ 3,600. To mph: ÷ 5,280. To m/s: × 0.000085.
Glacier movement in US studies, very slow industrial processes, and some geological measurements.
Some glaciers move at 50–500 ft/h. Very slow conveyor systems might use this unit.
Confusing with ft/min (60× faster) or ft/s (3,600× faster).
5,280 ft/h = 1 mph. Extremely slow. Rarely used outside specialized contexts.
About Millimeter per Second (mm/s)
Millimeter per second measures distance in millimeters traveled in one second. Used for small-scale movements and precise measurements.
1 mm/s = 0.001 m/s = 0.0036 km/h = 0.06 m/min.
To m/s: ÷ 1,000. To cm/s: ÷ 10. To km/h: × 0.0036.
Vibration measurements (machinery typically 0.1–50 mm/s RMS), small motor speeds, precision linear actuators, and tape/film transport speeds.
Machinery vibration: >10 mm/s indicates problems. Seismic activity: 0.001–100 mm/s. CD/DVD read head: 1.2–1.4 mm/s linear velocity.
Confusing mm/s with cm/s (10× different) or m/s (1000× different).
1,000 mm/s = 1 m/s. Very common in vibration analysis. 10 mm/s RMS is a typical machinery vibration threshold.
