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Acceleration

mph/stoft/s²

Convert miles per hour per second (mph/s) to feet per second squared (ft/s²).

Factor1 mph/s = 1.466667 ft/s²

Converter

mph/s

Accepts numbers or expressions, e.g. 150 + 14.7

Result
14.6667ft/s²

Rendered to 6 significant figures.

Formula

Formula
ft/s² = mph/s × 1.466667

Multiply any value in miles per hour per second by 1.466667 to obtain the value in feet per second squared.

Worked example

Convert 10 mph/s to ft/s².

  1. 01Start with 10 mph/s.
  2. 02Multiply by the conversion factor: 10 × 1.466667 = 14.6667 ft/s².
Result10 mph/s = 14.6667 ft/s²

Conversion table

mph/sft/s²
11.4667
22.9333
57.3333
1014.667
2029.333
5073.333
100146.67
200293.33
500733.33
10001466.7

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from mph/s to ft/s²?
1 mph/s equals 1.466667 ft/s². To convert, multiply the value in miles per hour per second by 1.466667.
How do I convert 1 mph/s to ft/s²?
1 mph/s = 1.46667 ft/s². For any value, multiply by 1.466667.
How do I convert ft/s² back to mph/s?
Divide by the same factor — or equivalently, multiply by 0.6818182. So 1 ft/s² = 0.681818 mph/s.
When would I need to convert mile per hour per second to foot per second squared?
Acceleration conversions between mph/s and ft/s² are common in vibration analysis, seismic load calculations, mechanical equipment specifications, and motion-control design. m/s² is the SI standard; g (standard gravity) is widely used in shock, vibration, and ride-quality work.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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