How many miles per hour are in 1 foot per second?

1 foot per second equals 0.681818 mph.

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

Use the reverse converter: 1 mile per hour equals 1.46667 ft/s.

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

To convert feet per second to miles per hour, multiply the value by 0.681818182.

mph = ft/s × 0.681818182

80 ft/s × 0.681818182 = 54.55 mph

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

How do I convert feet per second to miles per hour?: To convert feet per second to miles per hour, multiply the value by 0.681818182.
How many miles per hour are in 1 foot per second?: 1 foot per second equals 0.681818 mph.
How many miles per hour are in 10 feet per second?: 10 ft/s equals 6.81818 mph.
How do I convert miles per hour back to feet per second?: Use the reverse converter: 1 mile per hour equals 1.46667 ft/s.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.