MPH to FPS Converter
Convert miles per hour to feet per second instantly. One mile per hour equals exactly 1.466667 feet per second. Type in either box to convert both ways, then use the chart, worked examples and everyday sizes below.
How to convert miles per hour to feet per second
Worked example: convert 250 miles per hour to feet per second. Using feet per second ← miles per hour × 1.466666667, we get 250 × 1.466666667 = 366.66667 ft/s. To check the result, convert back: 366.66667 ft/s ÷ 1.466666667 = 250 mph.
Miles per hour to feet per second chart
| Miles per hour (mph) | Feet per second (ft/s) |
|---|---|
| 1 mph | 1.466667 ft/s |
| 2 mph | 2.933333 ft/s |
| 3 mph | 4.4 ft/s |
| 4 mph | 5.866667 ft/s |
| 5 mph | 7.333333 ft/s |
| 6 mph | 8.8 ft/s |
| 8 mph | 11.73333 ft/s |
| 10 mph | 14.66667 ft/s |
| 12 mph | 17.6 ft/s |
| 15 mph | 22 ft/s |
| 20 mph | 29.33333 ft/s |
| 25 mph | 36.66667 ft/s |
| 30 mph | 44 ft/s |
| 40 mph | 58.66667 ft/s |
| 50 mph | 73.33333 ft/s |
| 75 mph | 110 ft/s |
| 100 mph | 146.6667 ft/s |
| 150 mph | 220 ft/s |
| 200 mph | 293.3333 ft/s |
| 250 mph | 366.6667 ft/s |
| 500 mph | 733.3333 ft/s |
| 1,000 mph | 1,466.667 ft/s |
Feet per second to miles per hour (reverse)
| Feet per second (ft/s) | Miles per hour (mph) |
|---|---|
| 1 ft/s | 0.6818182 mph |
| 2 ft/s | 1.363636 mph |
| 5 ft/s | 3.409091 mph |
| 10 ft/s | 6.818182 mph |
| 20 ft/s | 13.63636 mph |
| 50 ft/s | 34.09091 mph |
| 100 ft/s | 68.18182 mph |
| 250 ft/s | 170.4545 mph |
| 500 ft/s | 340.9091 mph |
| 1,000 ft/s | 681.8182 mph |
About the mile per hour and the foot per second
Miles per hour is the speed unit on road signs and speedometers in the United States and United Kingdom.
Feet per second is used in US ballistics, baseball pitch analysis and some engineering tables.
One mile per hour equals 1.466667 feet per second, which makes the mile per hour the faster unit of the two.
Everyday sizes in miles per hour and feet per second
| Everyday example (approximate) | In miles per hour | In feet per second |
|---|---|---|
| A slow walk | 3.1317 mph | 4.5932 ft/s |
| A jogger | 6.7108 mph | 9.8425 ft/s |
| A city cyclist | 12.303 mph | 18.045 ft/s |
| Usain Bolt's peak sprint speed | 27.738 mph | 40.682 ft/s |
| A car on a city road | 31.071 mph | 45.571 ft/s |
| A car on a highway | 62.142 mph | 91.142 ft/s |
Miles per hour to feet per second FAQ
How many feet per second are in one mile per hour?
One mile per hour equals exactly 1.466666667 feet per second. In the other direction, one foot per second equals 0.68181818 miles per hour.
How do I convert miles per hour to feet per second without a calculator?
convert 250 miles per hour to feet per second. Using feet per second ← miles per hour × 1.466666667, we get 250 × 1.466666667 = 366.66667 ft/s. To check the result, convert back: 366.66667 ft/s ÷ 1.466666667 = 250 mph. For a quick estimate, round the factor to 1.5. Then 250 mph is about 375 ft/s, compared with the exact 366.667 ft/s (an error of 2.3%). That is close enough for planning, but use the calculator above when the number matters.
What is a car on a highway in feet per second?
A car on a highway is about 62.142 miles per hour, which is 91.142 feet per second. Treat that as an approximate everyday figure rather than an official measurement.
Are the miles per hour and feet per second the same in every country?
One mile per hour is exactly 0.44704 m/s. One foot per second is exactly 0.3048 m/s.