Mile per Hour to Feet per Second Converter
Quickly and accurately convert speed measurements from miles per hour to feet per second with our free online MPH to ft/s Converter. Perfect for physics calculations, sports analysis, and more.
Common Conversions
| Miles per Hour (mph) | Feet per Second (ft/s) |
|---|---|
| 1 mph | 1.466667 ft/s |
| 5 mph | 7.333335 ft/s |
| 10 mph | 14.66667 ft/s |
| 15 mph | 22.00001 ft/s |
| 25 mph | 36.66668 ft/s |
| 30 mph | 44.00001 ft/s |
| 45 mph | 66.00002 ft/s |
| 60 mph | 88.00002 ft/s |
| 100 mph | 146.6667 ft/s |
How It Works
Converting from miles per hour (mph) to feet per second (ft/s) is a common speed conversion within the imperial system, especially useful in physics, engineering, and sports analytics.
Conversion Formula:
1 mile per hour = 1.466667 feet per second
To convert miles per hour to feet per second, multiply the miles per hour value by 1.466667:
Feet per Second = Miles per Hour × 1.466667
Why is the factor 1.466667?
This conversion factor comes from the relationship between miles and feet, and hours and seconds:
- 1 mile = 5,280 feet
- 1 hour = 3,600 seconds
So, to convert mph to ft/s:
(miles/hour) × (5,280 feet/1 mile) × (1 hour/3,600 seconds) = (miles/hour) × (5,280/3,600) ft/s
(miles/hour) × 1.466667 = ft/s
Example Calculation:
To convert 60 miles per hour to feet per second:
Feet per Second = 60 mph × 1.466667 = 88.00002 ft/s
Our converter handles this calculation automatically and provides results with up to 9 decimal places for precision. It also formats the result to remove unnecessary trailing zeros for better readability.
Frequently Asked Questions
What is a mile per hour?
A mile per hour (mph) is an imperial and US customary unit of speed, representing the number of miles traveled in one hour. It’s the standard unit for measuring vehicle speeds in the United States, United Kingdom, and several other countries. It’s also commonly used for wind speeds in weather forecasts in these regions.
What is a foot per second?
A foot per second (ft/s or fps) is an imperial unit of speed, representing the distance in feet traveled in one second. It’s commonly used in ballistics, fluid dynamics, and some sports measurements in the United States and other countries that use imperial units.
Why would I need to convert miles per hour to feet per second?
This conversion is useful in several contexts:
- In physics and engineering calculations where ft/s is the preferred unit
- When working with ballistics or projectile motion, where speeds are typically measured in ft/s
- In fluid dynamics and hydraulics, where flow rates are often expressed in ft/s
- For comparing vehicle speeds (typically in mph) with other speed measurements in scientific contexts
- In sports science, where some athletic performance metrics use ft/s
How accurate is this converter?
Our converter uses the exact conversion factor of 1.466667 ft/s per mph, which is derived from the standard definitions of feet, miles, seconds, and hours. The calculator can display results with up to 9 decimal places for high precision needs, though most practical applications don’t require this level of precision.
What are some common speed benchmarks in both mph and ft/s?
- Average walking speed: 3 mph (4.4 ft/s)
- Average running speed: 6 mph (8.8 ft/s)
- Typical city speed limit: 25 mph (36.7 ft/s)
- Highway speed limit: 60 mph (88 ft/s)
- Average fastball in baseball: 90 mph (132 ft/s)
- Terminal velocity of a skydiver: 120 mph (176 ft/s)
- Speed of sound at sea level: 767 mph (1,125 ft/s)
How do I convert feet per second back to miles per hour?
To convert from feet per second to miles per hour, multiply the ft/s value by 0.681818. Alternatively, you can use our Feet per Second to Mile per Hour Converter for quick and accurate conversions.