How to convert feet per second to miles per hour
To convert feet per second to miles per hour, multiply by 0.681818181818. Speed conversions are used for driving, aviation, sailing, sports and physics problems.
Foot per Second to Mile per Hour conversion table
| Foot per Second (ft/s) | Mile per Hour (mph) |
|---|---|
| 0.1 ft/s | 0.0681818181818 mph |
| 0.5 ft/s | 0.340909090909 mph |
| 1 ft/s | 0.681818181818 mph |
| 2 ft/s | 1.36363636364 mph |
| 3 ft/s | 2.04545454545 mph |
| 4 ft/s | 2.72727272727 mph |
| 5 ft/s | 3.40909090909 mph |
| 10 ft/s | 6.81818181818 mph |
| 20 ft/s | 13.6363636364 mph |
| 25 ft/s | 17.0454545455 mph |
| 50 ft/s | 34.0909090909 mph |
| 100 ft/s | 68.1818181818 mph |
| 500 ft/s | 340.909090909 mph |
| 1,000 ft/s | 681.818181818 mph |
About the units
Foot per Second (ft/s)
Feet per second is used for projectile, fluid-flow and ballistics speeds in US engineering.
Mile per Hour (mph)
Miles per hour is the road speed unit in the US and UK; 1 mph is exactly 0.44704 m/s.
How to use this converter
- Type the number of feet per second (ft/s) in the input box.
- The result in miles per hour appears instantly — no button needed.
- See the same value in every other speed unit just below.
- Use “Swap units” to convert miles per hour back to feet per second.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many miles per hour are in one foot per second?
One foot per second equals 0.681818181818 miles per hour. 0.681818181818 is the exact factor used by this converter.
How do I convert feet per second to miles per hour?
Multiply the value in feet per second by 0.681818181818. To go the other way, multiply miles per hour by 1.46666666667.
What is 10 ft/s in mph?
10 ft/s = 6.81818181818 mph. Also, 5 ft/s = 3.40909090909 mph and 100 ft/s = 68.1818181818 mph.
What is the difference between a foot per second and a mile per hour?
Feet per second is used for projectile, fluid-flow and ballistics speeds in US engineering. Miles per hour is the road speed unit in the US and UK; 1 mph is exactly 0.44704 m/s.
Is this tool free and private?
Yes — the Foot per Second to Mile per Hour is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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