Home› Conversions› Speed› Feet per second to Miles per hour
Speed
Feet per second to Miles per hour
Convert feet per second (ft/s) to miles per hour (mph). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 ft/s = 0.681818 mph
Feet per second to Miles per hour Conversion Table
Common values, ready to copy:
| feet per second | miles per hour |
|---|---|
| 1 ft/s | 0.681818 mph |
| 2 ft/s | 1.3636 mph |
| 5 ft/s | 3.4091 mph |
| 10 ft/s | 6.8182 mph |
| 25 ft/s | 17.0455 mph |
| 50 ft/s | 34.0909 mph |
| 100 ft/s | 68.1818 mph |
| 1,000 ft/s | 681.82 mph |
Formula
miles per hour = feet per second × 6.81818182e-1
Speed is distance per unit time. 1 m/s = 3.6 km/h. 1 mph = 1.609344 km/h. 1 knot = 1.852 km/h (one nautical mile per hour).
About Feet per second and Miles per hour
Feet per second (ft/s): Imperial-system speed unit, occasionally used in US engineering and scientific contexts. Common uses: Ballistics (bullet velocities), some sports analytics (US football, baseball pitch tracking), and certain physics calculations in US-derived sources.
Miles per hour (mph): Derived from the mile (1,609.344 m exactly) and the hour; conventional speed unit in the US, UK, and a handful of other countries. Common uses: US road speed limits, US sports speeds (baseball pitches in mph), UK road signs, and most US vehicle dashboards.
How the conversion works
Speed is distance per unit time. 1 m/s = 3.6 km/h. 1 mph = 1.609344 km/h. 1 knot = 1.852 km/h (one nautical mile per hour).
The exact relationship is miles per hour = feet per second × 6.81818182e-1, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between feet per second and miles per hour comes up wherever speed measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.