About the Feet per Second Converter
Convert feet per second (ft/s) to miles per hour (mph) instantly. Includes the exact conversion factor, formula and a quick reference table.
Also known as: ft/s to mph, Feet per second to Miles per hour, convert Feet per second to Miles per hour, fps to mph, ft/s to mph, fps to m/s.
How to use this calculator
- Enter value in feet per second.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Open “Step-by-step” to see how the answer was worked out.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
mph = ft/s × 0.6818181818
Worked example
Using the values pre-filled in the calculator above:
- Value in feet per second = 100 ft/s
the calculator returns:
- Miles per hour: 68.181818 mph
- Meters per second: 30.48 m/s
- Kilometers per hour: 109.728 km/h
- Knots: 59.2484 kn
Working
100 ft/s × 0.6818181818 = 68.18181818 mph