MPH to Feet per Second Converter
Formula
ft/s = mph × 1.46667
Multiply miles per hour by 1.46667 to get feet per second.
How to use
- Enter your speed in the Miles per Hour field.
- The tool multiplies by 1.46667 automatically.
- Read the converted speed in the Feet per Second result.
Example
Enter 60 in the Miles per Hour field. Multiplying 60 by 1.46667 gives 88 ft/s. So 60 mph equals 88 feet per second.
Frequently Asked Questions
How fast is 60 mph in ft/s?
60 mph = 88 ft/s.
Where does the 1.46667 conversion factor come from?
One mile equals 5,280 feet and one hour equals 3,600 seconds, so dividing 5,280 by 3,600 gives 1.46667. Multiplying any speed in mph by this factor converts it to feet per second. A common shortcut is that 60 mph equals exactly 88 ft/s, since 60 x 1.46667 rounds to 88.
Why is feet per second useful for reaction and stopping distance?
Stopping distance depends on how far a vehicle travels during the second or two it takes a driver to react, and feet per second makes that distance easy to see. At 60 mph a car covers 88 feet every second, so a 1.5-second reaction time means nearly 132 feet pass before braking even begins. Working in ft/s avoids awkward fraction-of-an-hour math when analyzing crashes or sports plays.