Convert feet per second to miles per hour
Enter a value in feet per second (ft/s) to get miles per hour (mph). One foot per second is 0.681818 miles per hour; one mile per hour is 1.4667 feet per second.
How to use the Foot per second to mile per hour
- Type the number of feet per second.
- Click Convert.
- Read the result in miles per hour, plus the same value in every other speed unit.
ft/s to mph formula
miles per hour = feet per second × 0.681818. To go the other way, feet per second = miles per hour × 1.4667 (see miles per hour to feet per second).
Worked example
12 ft/s × 0.681818 = 8.1818 mph.
Feet per second to miles per hour conversion table
| Feet per second | Miles per hour |
|---|---|
| 0.1 ft/s | 0.068182 mph |
| 0.5 ft/s | 0.340909 mph |
| 1 ft/s | 0.681818 mph |
| 2 ft/s | 1.3636 mph |
| 3 ft/s | 2.0455 mph |
| 5 ft/s | 3.4091 mph |
| 10 ft/s | 6.8182 mph |
| 20 ft/s | 13.6364 mph |
| 25 ft/s | 17.0455 mph |
| 50 ft/s | 34.0909 mph |
| 100 ft/s | 68.1818 mph |
| 250 ft/s | 170.4545 mph |
| 500 ft/s | 340.9091 mph |
| 1,000 ft/s | 681.8182 mph |
About the foot per second
Used in US engineering and ballistics.
About the mile per hour
Road speed limits in the USA and UK; exactly 1.609344 km/h.
Related conversions
Frequently asked questions
How many miles per hour in a foot per second?
0.681818 miles per hour.
How many feet per second in a mile per hour?
1.4667 feet per second.
Is the factor exact?
The factor 0.681818 is derived from the units' exact definitions; only the display is rounded.
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Last updated 2026-09-23.