FPS to MPH Converter
Type a value in feet per second to see it in miles per hour as you type, with the exact formula and a reference chart.
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- Kilometers per hour
- 96.561 km/h
How this was calculated
- 1 mile per hour = 1.466666667 feet per second
- 88 ÷ 1.466666667 = 60 mph
| ft/s | mph |
|---|---|
| 1 ft/s | 0.681818 mph |
| 5 ft/s | 3.40909 mph |
| 10 ft/s | 6.81818 mph |
| 15 ft/s | 10.2273 mph |
| 20 ft/s | 13.6364 mph |
| 22 ft/s | 15 mph |
| 25 ft/s | 17.0455 mph |
| 30 ft/s | 20.4545 mph |
| 40 ft/s | 27.2727 mph |
| 44 ft/s | 30 mph |
| 50 ft/s | 34.0909 mph |
| 60 ft/s | 40.9091 mph |
| 73.3 ft/s | 49.9773 mph |
| 80 ft/s | 54.5455 mph |
| 88 ft/s | 60 mph |
| 100 ft/s | 68.1818 mph |
| 110 ft/s | 75 mph |
| 120 ft/s | 81.8182 mph |
| 150 ft/s | 102.273 mph |
| 200 ft/s | 136.364 mph |
| 300 ft/s | 204.545 mph |
| 500 ft/s | 340.909 mph |
| 1,000 ft/s | 681.818 mph |
| 1,100 ft/s | 750 mph |
| 1,125 ft/s | 767.045 mph |
| 3,000 ft/s | 2,045.45 mph |
| mph | ft/s |
|---|---|
| 1 mph | 1.46667 ft/s |
| 5 mph | 7.33333 ft/s |
| 10 mph | 14.6667 ft/s |
| 15 mph | 22 ft/s |
| 20 mph | 29.3333 ft/s |
| 25 mph | 36.6667 ft/s |
| 30 mph | 44 ft/s |
| 35 mph | 51.3333 ft/s |
| 40 mph | 58.6667 ft/s |
| 45 mph | 66 ft/s |
| 50 mph | 73.3333 ft/s |
| 55 mph | 80.6667 ft/s |
How to convert feet per second to miles per hour
1 foot per second = 0.6818181818 miles per hour. To convert feet per second to miles per hour, divide by 1.466666667 (or multiply by 0.6818181818). One foot per second is exactly 0.3048 m/s. One mile per hour is 1,609.344 m covered in one hour.
Worked examples
- 44 feet per second = 30 mph (44 ÷ 1.4666667)
- 88 feet per second = 60 mph (88 ÷ 1.4666667)
- 1,125 feet per second = 767.045 mph (1,125 ÷ 1.4666667)
Where this conversion comes up
Feet per second are used for ballistics, stopping-distance tables and fluid flow in the US; miles per hour for speed limits and car speedometers in the US and UK. One foot per second is 0.6818 mph: 88 ft/s is exactly 60 mph (a classic driver's-ed figure) and 1,125 ft/s, the speed of sound at sea level, is 767 mph. Arrows and paintballs are rated in ft/s.
Quick estimate
Multiply by 0.68, or take two thirds and add 2%.
Common mistakes
- Multiplying instead of dividing. A mile per hour is larger than a foot per second, so the number of miles per hour must come out smaller: 44 feet per second = 30 mph.
- Rounding too early. Keep the full factor until the last step; rounding 0.682 to 0.7 first puts large values noticeably off.
Going the other way? Use the mph to fps converter. Related speed converters: kph to mph, mph to kph, knots to mph, mph to knots, mph to m/s, m/s to mph.
Frequently asked questions
How do you convert feet per second to miles per hour?
Multiply the feet per second by 0.6818181818 (or divide by 1.466666667). For example, 88 feet per second is 60 miles per hour.
How many miles per hour are in one foot per second?
One foot per second is 0.6818181818 miles per hour. One foot per second is exactly 0.3048 m/s.
What is 1,125 feet per second in miles per hour?
1,125 feet per second is 767.045 miles per hour.
Is there a quick way to estimate feet per second to miles per hour?
Multiply by 0.68, or take two thirds and add 2%.