MPH to ft/s Converter
Quick answer: To convert MPH to ft/s, multiply by 1.466667. For example, 10 mph is 14.66667 ft/s. One mile per hour equals 1.466667 ft/s.
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Use the MPH to ft/s Converter
MPH to ft/s formula and what each symbol means
ft/s = mph × 1.466667
| Symbol | Meaning |
|---|---|
| mph | Mile per hour |
| ft/s | Foot per second |
MPH to ft/s examples
1 mph
1 mph × 1.466667 = 1.466667 ft/s.
10 mph
10 mph × 1.466667 = 14.66667 ft/s.
100 mph
100 mph × 1.466667 = 146.6667 ft/s.
MPH compared with ft/s
One mph is 1.467 times as large as one ft/s, so your number gets bigger when you convert MPH to ft/s and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
About MPH and ft/s
Mile per hour (mph): Miles per hour, exactly 0.44704 m/s. Foot per second (ft/s): Feet per second, exactly 0.3048 m/s.
Where MPH to ft/s conversions are used
Road signs use km/h or mph depending on the country, and aviation and shipping use knots. Sports results are quoted in m/s, km/h or mph.
How to calculate MPH to ft/s step by step
- Enter the value in mph (the starting unit).
- Multiply by 1.466667, because 1 mph = 1.466667 ft/s.
- The product is the value in ft/s. To go back, divide by 1.466667 or multiply by 0.6818182.
Popular speed conversions
How to read your MPH to ft/s result
Quick estimate: multiply by about 1.47 to get ft/s from MPH; this is within 0.3% of the exact factor. One mile per hour is exactly 0.44704 m/s, and one knot is exactly one nautical mile per hour, or 0.514444 m/s.
| MPH | FT/S |
|---|---|
| 1 | 1.466667 |
| 2 | 2.933333 |
| 5 | 7.333333 |
| 10 | 14.66667 |
| 20 | 29.33333 |
| 50 | 73.33333 |
| 100 | 146.6667 |
| 1,000 | 1,466.667 |
ft/s to MPH: quick table
| FT/S | MPH |
|---|---|
| 1 | 0.6818182 |
| 5 | 3.409091 |
| 10 | 6.818182 |
| 25 | 17.04545 |
| 50 | 34.09091 |
| 100 | 68.18182 |
| 250 | 170.4545 |
| 500 | 340.9091 |
Common mistakes when calculating MPH to ft/s
- Multiplying when you should divide: km/h to mph divides by 1.609344, while mph to km/h multiplies by it.
- Dividing when you should multiply: from mph to ft/s multiply by 1.466667; from ft/s to mph divide by 1.466667.
MPH to ft/s FAQ
How many ft/s are in 1 mph?
1 mph equals 1.466667 ft/s.
How many mph are in 1 ft/s?
1 ft/s equals 0.6818182 mph.
Is 1 mph = 1.466667 ft/s an exact conversion?
Yes. The mile per hour and the foot per second are both defined exactly in SI terms, so the ratio has no measurement uncertainty; 1.466667 is just that ratio shown to 7 significant figures.
What is a mile per hour (mph)?
Miles per hour, exactly 0.44704 m/s.
How can I estimate MPH to ft/s in my head?
Quick estimate: multiply by about 1.47 to get ft/s from MPH; this is within 0.3% of the exact factor.
What is 150 mph in ft/s?
150 mph = 220 ft/s (since 150 × 1.466667).
What is 0.5 mph in ft/s?
0.5 mph = 0.7333333 ft/s (since 0.5 × 1.466667).
What is 25 mph in ft/s?
25 mph = 36.66667 ft/s (since 25 × 1.466667).
How many decimals should I keep when converting mph to ft/s?
Match the precision of your original measurement. For example, 14.66667 ft/s rounds to 14.7 ft/s at 3 significant figures; keep more digits only for engineering or scientific work.
More in Speed converters
- MPH to m/s Converter
- m/s to km/h Converter
- m/s to ft/s Converter
- ft/s to km/h Converter
- Knots to MPH Converter
- ft/s to Knots Converter
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors