Miles per Hour to Feet per Second (mph to ft/s) Converter
1 mile per hour (mph) = 1.46667 feet per second (ft/s). To convert miles per hour to feet per second, multiply by 1.46667: 70 mph × 1.46667 = 102.667 ft/s.
Quick facts
- 1 mph = 1.46667 ft/s
- 1 ft/s = 0.681818 mph
- Formula: ft/s = mph × 1.46667
- Quick estimate: multiply by about 1.5
How to convert miles per hour to feet per second
- Take the value in miles per hour.
- Multiply it by 1.46667 (the number of feet per second in one mile per hour).
- Round the result to the precision you need.
Worked example (the UK motorway speed limit): 70 mph × 1.46667 = 102.667 ft/s.
To convert feet per second back to miles per hour, multiply by 0.681818, or divide by 1.46667.
Source: NIST SP 811 (2008), derived from the metre, the international mile and the second.
Miles per Hour to Feet per Second conversion table
| Miles per Hour [mph] | Feet per Second [ft/s] |
|---|---|
| 0.01 mph | 0.0146666667 ft/s |
| 0.1 mph | 0.1466666667 ft/s |
| 1 mph | 1.4666666667 ft/s |
| 2 mph | 2.9333333333 ft/s |
| 3 mph | 4.4 ft/s |
| 5 mph | 7.3333333333 ft/s |
| 10 mph | 14.6666666667 ft/s |
| 20 mph | 29.3333333333 ft/s |
| 50 mph | 73.3333333333 ft/s |
| 100 mph | 146.6666666667 ft/s |
| 1000 mph | 1466.6666666667 ft/s |
mph to ft/s chart from 1 to 100
- 1 mph 1.46667 ft/s
- 2 mph 2.93333 ft/s
- 3 mph 4.4 ft/s
- 4 mph 5.86667 ft/s
- 5 mph 7.33333 ft/s
- 6 mph 8.8 ft/s
- 7 mph 10.2667 ft/s
- 8 mph 11.7333 ft/s
- 9 mph 13.2 ft/s
- 10 mph 14.6667 ft/s
- 11 mph 16.1333 ft/s
- 12 mph 17.6 ft/s
- 13 mph 19.0667 ft/s
- 14 mph 20.5333 ft/s
- 15 mph 22 ft/s
- 16 mph 23.4667 ft/s
- 17 mph 24.9333 ft/s
- 18 mph 26.4 ft/s
- 19 mph 27.8667 ft/s
- 20 mph 29.3333 ft/s
- 25 mph 36.6667 ft/s
- 30 mph 44 ft/s
- 35 mph 51.3333 ft/s
- 40 mph 58.6667 ft/s
- 45 mph 66 ft/s
- 50 mph 73.3333 ft/s
- 55 mph 80.6667 ft/s
- 60 mph 88 ft/s
- 65 mph 95.3333 ft/s
- 70 mph 102.667 ft/s
- 75 mph 110 ft/s
- 80 mph 117.333 ft/s
- 85 mph 124.667 ft/s
- 90 mph 132 ft/s
- 95 mph 139.333 ft/s
- 100 mph 146.667 ft/s
Feet per Second to Miles per Hour conversion table
| Feet per Second [ft/s] | Miles per Hour [mph] |
|---|---|
| 0.01 ft/s | 0.0068181818 mph |
| 0.1 ft/s | 0.0681818182 mph |
| 1 ft/s | 0.6818181818 mph |
| 2 ft/s | 1.3636363636 mph |
| 3 ft/s | 2.0454545455 mph |
| 5 ft/s | 3.4090909091 mph |
| 10 ft/s | 6.8181818182 mph |
| 20 ft/s | 13.6363636364 mph |
| 50 ft/s | 34.0909090909 mph |
| 100 ft/s | 68.1818181818 mph |
| 1000 ft/s | 681.8181818182 mph |
Miles per Hour vs Feet per Second
| Mile per Hour | Foot per Second | |
|---|---|---|
| Symbol | mph | ft/s |
| Equals | 1 mph = 1.46667 ft/s | 1 ft/s = 0.681818 mph |
What is a mile per hour?
Distance in miles covered in one hour. The standard speed unit for driving and wind speed in the US and UK.
What is a foot per second?
Distance in feet covered in one second. Used in US ballistics, engineering, and fluid flow.
Frequently asked questions
How many feet per second are in a mile per hour?
There are 1.46667 feet per second in 1 mile per hour (1 mph = 1.4666666667 ft/s).
How many miles per hour are in a foot per second?
There are 0.681818 miles per hour in 1 foot per second (1 ft/s = 0.6818181818 mph).
How do I convert miles per hour to feet per second?
Multiply the number of miles per hour by 1.46667. For example, 10 mph × 1.46667 = 14.6667 ft/s. To convert back, multiply by 0.681818.
What is 10 mph in feet per second?
10 mph = 14.6667 ft/s.
What is 100 mph in feet per second?
100 mph = 146.667 ft/s.
Is the conversion exact?
Yes. The factor comes from the official definitions of both units (NIST SP 811 (2008), derived from the metre, the international mile and the second). Results are shown to up to 10 decimal places; round them to suit your purpose.
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