Feet per Second to Miles per Hour (ft/s → mph)
Formula
1 ft/s = 0.6818181818181819 mphConversion Table
| ft/s | mph |
|---|---|
| 0 | 0 |
| 1.0000 | 0.68182 |
| 2.0000 | 1.3636 |
| 3.0000 | 2.0455 |
| 4.0000 | 2.7273 |
| 5.0000 | 3.4091 |
| 6.0000 | 4.0909 |
| 7.0000 | 4.7727 |
| 8.0000 | 5.4545 |
| 9.0000 | 6.1364 |
| 10.000 | 6.8182 |
| 11.000 | 7.5000 |
| 12.000 | 8.1818 |
| 13.000 | 8.8636 |
| 14.000 | 9.5455 |
| 15.000 | 10.227 |
| 16.000 | 10.909 |
| 17.000 | 11.591 |
| 18.000 | 12.273 |
| 19.000 | 12.955 |
| ft/s | mph |
|---|---|
| 20.000 | 13.636 |
| 21.000 | 14.318 |
| 22.000 | 15.000 |
| 23.000 | 15.682 |
| 24.000 | 16.364 |
| 25.000 | 17.045 |
| 26.000 | 17.727 |
| 27.000 | 18.409 |
| 28.000 | 19.091 |
| 29.000 | 19.773 |
| 30.000 | 20.455 |
| 31.000 | 21.136 |
| 32.000 | 21.818 |
| 33.000 | 22.500 |
| 34.000 | 23.182 |
| 35.000 | 23.864 |
| 36.000 | 24.545 |
| 37.000 | 25.227 |
| 38.000 | 25.909 |
| 39.000 | 26.591 |
| ft/s | mph |
|---|---|
| 40.000 | 27.273 |
| 41.000 | 27.955 |
| 42.000 | 28.636 |
| 43.000 | 29.318 |
| 44.000 | 30.000 |
| 45.000 | 30.682 |
| 46.000 | 31.364 |
| 47.000 | 32.045 |
| 48.000 | 32.727 |
| 49.000 | 33.409 |
| 50.000 | 34.091 |
| 51.000 | 34.773 |
| 52.000 | 35.455 |
| 53.000 | 36.136 |
| 54.000 | 36.818 |
| 55.000 | 37.500 |
| 56.000 | 38.182 |
| 57.000 | 38.864 |
| 58.000 | 39.545 |
| 59.000 | 40.227 |
| ft/s | mph |
|---|---|
| 60.000 | 40.909 |
| 61.000 | 41.591 |
| 62.000 | 42.273 |
| 63.000 | 42.955 |
| 64.000 | 43.636 |
| 65.000 | 44.318 |
| 66.000 | 45.000 |
| 67.000 | 45.682 |
| 68.000 | 46.364 |
| 69.000 | 47.045 |
| 70.000 | 47.727 |
| 71.000 | 48.409 |
| 72.000 | 49.091 |
| 73.000 | 49.773 |
| 74.000 | 50.455 |
| 75.000 | 51.136 |
| 76.000 | 51.818 |
| 77.000 | 52.500 |
| 78.000 | 53.182 |
| 79.000 | 53.864 |
Feet per Second to Miles per Hour Conversion
Converting Feet per Second (ft/s) to Miles per Hour (mph) is a common speed conversion. 1 ft/s equals 0.681818 mph. For example, 100 ft/s is equal to 68.181818 mph.
Quick Mental Math: Feet per Second to Miles per Hour
Divide feet-per-second by approximately 1.47 to convert to miles-per-hour.
Why is converting Feet per Second to Miles per Hour tricky?
The non-integer divisor 1.47 requires careful mental arithmetic.
Quick Reference Values
1 ft/s = 0.681818 mph. 5 ft/s = 3.409091 mph. 10 ft/s = 6.818182 mph. 25 ft/s = 17.045455 mph. 50 ft/s = 34.090909 mph. 100 ft/s = 68.181818 mph.
What is Feet per Second?
Feet per Second (ft/s) is a unit of speed. Feet-per-second measures speed as feet traveled in one second. It converts to meters per second by multiplying feet by 0.3048. This unit is common in physics, ballistics, and engineering to express rapid velocities [iso-80000]. Feet-per-second became standardized with the development of modern physics and engineering in the late 19th and early 20th centuries. It was adopted for precise, short-interval velocity measurements in the imperial system [nist-si-guide]. Feet-per-second is widely used in the United States for projectile speeds, fluid flow velocities, and mechanical motion. It is less frequent outside imperial system countries, where meters per second is preferred [nist-si-guide].
What is Miles per Hour?
Miles per Hour (mph) is a unit of speed. Miles per hour measure speed as miles traveled in one hour. One mile equals 1,609.344 meters, so 1 mph equals approximately 0.44704 meters per second [bipm-si-brochure]. This unit is widely used for vehicle speed and speed limits in non-metric countries. Miles per hour originated from the mile and hour units standardized in the British Imperial system. It became common in transportation with the rise of automobiles and was internationally recognized with the mile's 1959 definition [bipm-si-brochure]. The USA, United Kingdom, and several Commonwealth nations use mph for road speed limits and vehicle speeds. It remains standard in aviation and motorsports within these countries, despite metrication efforts [nist-sp-811].
Common Misspellings
People often search for this conversion using these alternate spellings: feet per second, ft per second, feet/sec, fps, miles per hour, mile per hour, mi/h, mphs. All of these refer to the Feet per Second to Miles per Hour conversion.