Miles per hour to feet per second
Multiply miles per hour by 1.4667 to get feet per second.
30 mph = 44 ft/s
How to convert miles per hour to feet per second
The foot per second is feet travelled per second, exactly 0.3048 m/s. The mile per hour is miles travelled per hour, exactly 1.609344 km/h.
Worked example — 30 mph: 30 × 1.4667 = 44 ft/s.
Miles per hour to feet per second table
| Miles per hour | Feet per second |
|---|---|
| 1 mph | 1.4667 ft/s |
| 5 mph | 7.3333 ft/s |
| 10 mph | 14.6667 ft/s |
| 20 mph | 29.3333 ft/s |
| 30 mph | 44 ft/s |
| 40 mph | 58.6667 ft/s |
| 50 mph | 73.3333 ft/s |
| 60 mph | 88 ft/s |
| 70 mph | 102.6667 ft/s |
Reverse and related
About miles per hour and feet per second
Mile per hour (mph)
1 mph = 1.4667 ft/sDefinition. Miles travelled per hour, exactly 1.609344 km/h
History and origin
Miles per hour grew out of the English mile and the hour as roads and railways spread in the nineteenth century. It equals exactly 1.609344 kilometres per hour.
Current use
Miles per hour is the speed unit for road traffic in the United States and United Kingdom, and is common for running pace.
Source: NIST Handbook 44, Appendix C (Tables of Equivalents — international nautical mile); speeds derived from the exact mile, foot and hour
Foot per second (ft/s)
1 ft/s = 0.681818 mphDefinition. Feet travelled per second, exactly 0.3048 m/s
History and origin
The foot per second pairs the imperial foot with the second, and has long been used in mechanics and ballistics. It equals exactly 0.3048 metres per second.
Current use
Feet per second appear in physics problems and in ballistics, where muzzle velocities are often quoted this way.
Source: NIST Handbook 44, Appendix C (Tables of Equivalents — international nautical mile); speeds derived from the exact mile, foot and hour
Where people use this
Miles per hour: vehicle speed in the US and UK, speed limits, running pace. Feet per second: ballistics, physics problems. 60 mph is 88 ft/s.
Every value is carried to full double precision; the display is rounded.
Both units are defined in NIST Handbook 44, Appendix C (Tables of Equivalents — international nautical mile); speeds derived from the exact mile, foot and hour.
Questions people ask
How many ft/s is 60 mph?
60 mph is exactly 88 ft/s.
How many ft/s in a mph?
One mile per hour is about 1.47 ft/s.
How many ft/s is 30 mph?
30 mph is 44 ft/s.