Convert Miles per Hour to Feet per Second
mph to ft/s · speed conversion
What are miles per hour and feet per second?
Miles per hour is the standard speed unit for roads in the US and UK. Feet per second is an imperial speed unit used in ballistics and some engineering. For reference: a brisk walk is about 5 km/h (3 mph), and highway speed is around 100 km/h (62 mph).
How to convert miles per hour to feet per second
1 mph = 1.46667 ft/s. To convert, multiply the number of miles per hour by 1.46667. For example, 5 mph = 7.33333 ft/s, and 20 mph = 29.3333 ft/s. To go the other way, multiply feet per second by 0.681818 (since 1 ft/s = 0.681818 mph).
Miles per Hour to Feet per Second conversion table
| Miles per Hour (mph) | Feet per Second (ft/s) |
|---|---|
| 1 | 1.46667 |
| 5 | 7.33333 |
| 10 | 14.6667 |
| 30 | 44 |
| 60 | 88 |
| 100 | 146.667 |
| 120 | 176 |
FAQ
What is 1 mph in ft/s?
1 mph = 1.46667 ft/s. To convert any amount, multiply the number of miles per hour by 1.46667.
How do I convert feet per second back to miles per hour?
Go the other way: 1 ft/s = 0.681818 mph, so multiply feet per second by 0.681818 to get miles per hour.
Is a miles per hour bigger than a feet per second?
Yes — 1 mph is the larger unit, equal to 1.46667 ft/s.
Are these speed conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.