UnitConvConvert
Speed

Convert miles per hour to feet per second

1 mph=1.46667ft/s

Use the converter below to change any miles per hour value into feet per second instantly — with formula, conversion table, and real-world examples.

1.466667

Conversion formula

Forward
feet per second = miles per hour × 1.46667
Reverse
miles per hour = feet per second × 0.6818

Example: 10 mph × 1.46667 = 14.6667 ft/s.

About both units

From

Mile per Hour

mph

Miles per hour (mph) is the standard road-speed unit in the US, UK and a few other countries. US highways typically 65–75 mph; UK motorways 70 mph. US weather reports wind speed in mph, while meteorologists also use knots.

Real-world: US interstate: 70 mph typical. UK motorway: 70 mph limit. Cycling pro speed: 25 mph. Tornado winds: 110+ mph.
Read full mile per hour reference →
To

Foot per Second

ft/s

Feet per second (ft/s) is used in some US engineering, ballistics (bullet velocity) and older US physics textbooks. Typical handgun muzzle velocity: 1000–1400 ft/s. Rifle muzzle velocity: 2500–3500 ft/s.

Real-world: 9mm bullet muzzle velocity: ~1150 ft/s. .308 rifle: ~2700 ft/s. Free fall terminal velocity: ~195 ft/s.
Read full foot per second reference →

Mile per Hour to Foot per Second conversion table

Common miles per hour to feet per second values for quick reference.

Mile per Hour (mph)Foot per Second (ft/s)
1 mph1.46667 ft/s
5 mph7.33333 ft/s
10 mph14.6667 ft/s
25 mph36.6667 ft/s
50 mph73.3333 ft/s
100 mph146.667 ft/s
150 mph220 ft/s
200 mph293.333 ft/s
300 mph440 ft/s
500 mph733.333 ft/s

Tips & common mistakes

Quick tips

  • 1 mph = 1.609 km/h = 0.447 m/s.
  • Quick convert: mph × 1.6 = km/h.
  • UK speeds posted in mph on road signs despite general metrication.

Avoid these

  • Reading a UK road sign "50" as km/h — it's mph (= 80 km/h).
  • Converting mph to km/h by multiplying by 1.5 instead of 1.609 — 7% error.
  • Assuming "mph" and "MPH" differ — capitalisation does not matter.

Frequently asked questions

How many feet per second in a mile per hour?
One mile per hour equals 1.46667 feet per second.
How do I convert miles per hour to feet per second?
Multiply the mile per hour value by 1.46667 to get the equivalent in feet per second.
What is 100 miles per hour in feet per second?
100 miles per hour equals 146.667 feet per second.
Is a mile per hour bigger than a foot per second?
Yes. 1 mile per hour equals 1.46667 feet per second, so one mile per hour is larger.
How to convert miles per hour to feet per second without a calculator?
Multiply by 1.47 for a quick estimate; use a calculator for precise results.

Related speed conversions

📊 See full comparison matrix →

More from Mile per Hour

mph → km/h
1 = 1.60934 km/h
mph → m/s
1 = 0.447 m/s
mph → kn
1 = 0.869 kn
mph → Ma
1 = 0.001314 Ma
mph → cm/s
1 = 44.704 cm/s
mph → yd/min
1 = 29.3333 yd/min
mph → in/min
1 = 1,056.83 in/min
mph → Bft
1 = 0.447 Bft

More to Foot per Second

km/h → ft/s
1 = 0.9113 ft/s
m/s → ft/s
1 = 3.28084 ft/s
kn → ft/s
1 = 1.68781 ft/s
Ma → ft/s
1 = 1,116.44 ft/s
cm/s → ft/s
1 = 0.03281 ft/s
yd/min → ft/s
1 = 0.05 ft/s
in/min → ft/s
1 = 0.001388 ft/s
Bft → ft/s
1 = 3.28084 ft/s

Conversions in other categories

WeightKilogram → PoundLengthKilometer → MileTemperatureCelsius → FahrenheitVolumeLiter → US GallonAreaSquare Meter → Square FootEnergyKilojoule → KilocaloriePressureBar → Pound per Square InchPowerKilowatt → Mechanical Horsepower