How to convert miles per hour to feet per second
- Take the value in miles per hour.
- Use the formula feet per second = miles per hour × 1.466666667.
- For example, 30 mph is 44 ft/s.
About miles per hour and feet per second
Multiply mph by 1.466667, which is 22/15, to get feet per second. For a quick estimate add half: 40 mph gives 60 ft/s against the exact 58.67, about 2% high.
Feet per second tells you how much ground you cover in the time it takes to react. Driving instructors use it to explain following distance and reaction distance, and it is how baseball fans work out how long a pitch takes to reach the plate.
Examples
- 30 mph (a 30 mph city street) is 44 ft/s
- 60 mph (one mile a minute) is 88 ft/s
- 70 mph (a 70 mph highway speed) is 102.67 ft/s
- 95 mph (a 95 mph fastball) is 139.33 ft/s
Miles per hour to feet per second chart
| Miles per hour (mph) | Feet per second (ft/s) |
|---|---|
| 1 | 1.47 |
| 2 | 2.93 |
| 3 | 4.4 |
| 5 | 7.33 |
| 10 | 14.67 |
| 15 | 22 |
| 20 | 29.33 |
| 25 | 36.67 |
| 30 | 44 |
| 35 | 51.33 |
| 40 | 58.67 |
| 45 | 66 |
| Miles per hour (mph) | Feet per second (ft/s) |
|---|---|
| 50 | 73.33 |
| 55 | 80.67 |
| 60 | 88 |
| 65 | 95.33 |
| 70 | 102.67 |
| 75 | 110 |
| 80 | 117.33 |
| 90 | 132 |
| 100 | 146.67 |
| 120 | 176 |
| 150 | 220 |
| 200 | 293.33 |