How many feet per second are in 1 mile per hour?

1 mile per hour equals 1.46667 ft/s.

How do I convert feet per second back to miles per hour?

Use the reverse converter: 1 foot per second equals 0.681818 mph.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert miles per hour to feet per second, multiply the value by 1.46666667.

ft/s = mph × 1.46666667

140 mph × 1.46666667 = 205.33 ft/s

Mile Per Hour (mph): Used for road speed limits in the US and UK. Exactly 0.44704 metres per second.
Foot Per Second (ft/s): Used in US engineering and ballistics. Exactly 0.3048 metres per second.

How do I convert miles per hour to feet per second?: To convert miles per hour to feet per second, multiply the value by 1.46666667.
How many feet per second are in 1 mile per hour?: 1 mile per hour equals 1.46667 ft/s.
How many feet per second are in 10 miles per hour?: 10 mph equals 14.6667 ft/s.
How do I convert feet per second back to miles per hour?: Use the reverse converter: 1 foot per second equals 0.681818 mph.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.