HomeUnit Conversion › Miles per hour to Feet per second

Miles per hour to Feet per second (mph to ft/s)

Convert miles per hour to feet per second: 1 mph = 1.46667 ft/s. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.

Formula

1 mph = 1.46667 ft/s

feet per second = miles per hour × 1.466666667 — reverse: miles per hour = feet per second × 0.6818181818

The factor is derived from the SI definitions of both units (base unit: m/s) as listed in NIST SP 811; results on this page are shown to 6 significant figures, the API returns up to 12.

Worked examples

Miles per hour to feet per second conversion table

Miles per hour (mph)Feet per second (ft/s)
11.46667
22.93333
34.4
45.86667
57.33333
68.8
710.2667
811.7333
913.2
1014.6667
1522
2029.3333
2536.6667
3044
4058.6667
5073.3333
75110
100146.667
200293.333
250366.667
500733.333
10001466.67

FAQ

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

1 mph = 1.46667 ft/s. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.

What is the formula to convert miles per hour to feet per second?

Multiply the value in miles per hour by 1.466666667: feet per second = miles per hour × 1.466666667. For example, 5 mph = 7.33333 ft/s.

How do I convert feet per second back to miles per hour?

Multiply by the inverse factor 0.6818181818 (miles per hour = feet per second × 0.6818181818), or use the feet per second-to-miles per hour page.

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