ConverterKey
HomeAll ConvertersText ToolsLengthTemperatureData
Explore
HomeAll ConvertersText ToolsLengthTemperatureData

ConverterKey

A modern converter toolkit built for speed, precision, and mobile use.

Popular converters

  • Length Converter
  • CM to Inches Converter
  • Feet to Meters Converter
  • Miles to Kilometers Converter
  • Area Converter

Platform

  • About
  • Contact
  • All converters
  • Search tools
  • Browse categories
  • Sitemap

Legal

  • Privacy Policy
  • Terms of Use

© 2026 ConverterKey. Validate critical calculations independently.

  1. Home
  2. /
  3. Converters
  4. /
  5. Speed Converter
  6. /
  7. Convert mph to fps

Convert mph to fps

Convert Mile per hour (mph) to Foot per second (ft/s) instantly.

Calculation

value × 1.46666666667

Quick ConversionConverted
1 mph1.466667 ft/s
5 mph7.333333 ft/s
10 mph14.666667 ft/s
100 mph146.666667 ft/s
1,000 mph1,466.666667 ft/s

Mile per hour

Miles per hour measures miles traveled in one hour.

Miles per hour is used for road speeds in the United States and the United Kingdom, plus vehicle, weather, and sport references.

mph is used for road signs, vehicle dashboards, weather reports, aviation references, sports speeds, and travel estimates in mph-based regions.

Foot per second

Feet per second measures how many feet are traveled in one second.

Feet per second is used in US customary engineering, ballistics, fluid flow, motion analysis, and technical calculations.

fps is used for motion analysis, engineering, ballistics, flow rates, physics examples, impact speeds, and short-interval speed data.

How to Convert Mile per hour to Foot per second

Mathematically, foot per second (ft/s) = mile per hour (mph) converted with the formula below.

1 mph = 1.466667 ft/s

1 ft/s = 0.681818 mph

Formula: value × 1.46666666667

Example: 15 mph = 22 ft/s

  1. Start with the speed in miles per hour (mph).
  2. Multiply by 1.46666666667 to convert miles per hour into feet per second.
  3. Use feet per second when the calculation uses feet and seconds instead of miles and hours.

Precision note: Use 1.46666666667 feet per second per mile per hour. Keep precision for calculations and round for plain-language display.

How many mph in ft/s and ft/s in mph

1 mph = 1.466667 ft/s

1 ft/s = 0.681818 mph

Mile per hour [mph]Foot per second [ft/s]
0.01 mph0.014667 ft/s
0.1 mph0.146667 ft/s
1 mph1.466667 ft/s
2 mph2.933333 ft/s
5 mph7.333333 ft/s
10 mph14.666667 ft/s
20 mph29.333333 ft/s
50 mph73.333333 ft/s
100 mph146.666667 ft/s

Common Use Cases for mph to ft/s

  • Converting road speeds into ft/s for stopping-distance calculations.
  • Analyzing sports, vehicle, or projectile motion over short time intervals.
  • Preparing engineering or simulation work from mph source values.
  • Checking impact, approach, or travel distance per second in feet.

FAQ

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

One mile per hour is exactly 1.46666666667 feet per second.

How fast is 60 mph in feet per second?

60 mph is exactly 88 feet per second.

When is ft/s better than mph?

Feet per second is better for short-time motion, engineering, stopping distance, and calculations based on seconds.

More Mile per hour conversions

  • mph to mps
  • mph to kph
  • mph to knot