Unit Converters

Precision suite9 categories | metric & imperial

Choose a category below and convert between units quickly and accurately.

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speed

Speed Conversion

From

Amount to Convert

Result

0.68181818mph

1 Feet/second = 0.68181818 Miles/hour

infoAbout Speed Tool

Velocity conversions from everyday speeds to supersonic Mach numbers and the speed of light.

Quick References

1 Kilometers/hour to Miles/hour0.62137169
1 Meters/second to Kilometers/hour3.59999712
1 Knots to Kilometers/hour1.85199692

table_chartCommon Conversions

Meters/second0.3048 m/s

Kilometers/hour1.09727912 km/h

Miles/hour0.68181818 mph

Knots0.59248431 kn

Mach8.8863e-4 mach

Feet/second to Miles/hour Conversion Table

Feet/second (ft/s)	Miles/hour (mph)
1 ft/s	0.68181818 mph
2 ft/s	1.36363636 mph
5 ft/s	3.40909091 mph
10 ft/s	6.81818182 mph
25 ft/s	17.04545455 mph
50 ft/s	34.09090909 mph
100 ft/s	68.18181818 mph
250 ft/s	170.45454545 mph
500 ft/s	340.90909091 mph
1000 ft/s	681.81818182 mph

How to Convert Feet/second to Miles/hour

Formula

Miles/hour = Feet/second × 0.68181818

Worked Example

Example: 5 Feet/second = 5 × 0.68181818 = 3.40909091 Miles/hour

To convert Feet/second to Miles/hour, multiply the Feet/second value by 0.68181818. This factor is derived from the ratio between the two units.

About These Units

ft/s

Feet per Second

Feet per second is an imperial unit of speed measuring the distance in feet traveled per second. It is commonly used in ballistics for bullet velocities, in engineering, and in sports for measuring sprint speeds.

History

Feet per second has been used in English-speaking countries for centuries. It is particularly important in ballistics, where muzzle velocities of firearms are typically expressed in fps. For reference, the speed of sound at sea level is approximately 1,125 ft/s.

mph

Miles per Hour

Miles per hour is a unit of speed expressing the number of miles traveled in one hour. It is the standard unit for vehicle speed limits and speedometers in the United States, United Kingdom, and a few other countries.

History

Miles per hour became widely used with the advent of automobile travel in the early 20th century. The US and UK use mph for all road speed limits. The highest speed limit in the United States is 85 mph on a stretch of Texas State Highway 130.

Frequently Asked Questions

Related Speed Conversions

arrow_forwardFeet/second to Meters/second arrow_forwardFeet/second to Kilometers/hour arrow_forwardFeet/second to Knots arrow_forwardFeet/second to Mach arrow_forwardFeet/second to Speed of Light arrow_forwardMeters/second to Miles/hour arrow_forwardKilometers/hour to Miles/hour arrow_forwardKnots to Miles/hour arrow_forwardMach to Miles/hour arrow_forwardSpeed of Light to Miles/hour

Why use NexaConvert for Units?

verified

Scientific Accuracy

Calculated using the latest NIST standards for physical constants and unit ratios.

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Instant Execution

No reload required. Get your results in real-time as you type or change units.

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Cross-Device

A responsive precision tool that fits in your pocket or dominates your desktop.

How these conversions work

Each category converts first through a base unit, then into the destination unit. That keeps the math consistent across metric and imperial systems and makes it easier to explain how results are generated.

When to double-check

Use these tools for planning, study, and everyday reference. For regulated, medical, engineering, or procurement work, confirm requirements against the official standard or specification you are working from.

Feet/second (ft/s)

Miles/hour (mph)

1 ft/s

0.68181818 mph

2 ft/s

1.36363636 mph

5 ft/s

3.40909091 mph

10 ft/s

6.81818182 mph

25 ft/s

17.04545455 mph

50 ft/s

34.09090909 mph

100 ft/s

68.18181818 mph

250 ft/s

170.45454545 mph

500 ft/s

340.90909091 mph

1000 ft/s

681.81818182 mph

About These Units

ft/s

Feet per Second

History

mph

Miles per Hour

History

Why use NexaConvert for Units?

verified

Scientific Accuracy

Calculated using the latest NIST standards for physical constants and unit ratios.

bolt

Instant Execution

No reload required. Get your results in real-time as you type or change units.

devices

Cross-Device

A responsive precision tool that fits in your pocket or dominates your desktop.