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Convert feet per second to miles per hour

Instant, accurate ft/s → mph conversion with a live converter, table and formula.

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1 feet per second = 0.681818 miles per hour

1 miles per hour = 1.46667 feet per second

feet per second to miles per hour table

feet per second (ft/s)miles per hour (mph)
0.50.340909
10.681818
21.36364
53.40909
106.81818
2013.6364
5034.0909
10068.1818
500340.909
1000681.818

Formula

miles per hour = feet per second × 0.681818.

Example

10 feet per second = 6.81818 miles per hour.

What is a feet per second?

Feet per second (ft/s) measures speed in imperial units.

What is a miles per hour?

Miles per hour (mph) is the imperial speed unit used in the US and UK.

Real-world reference points

Walking is ~5 km/h (3 mph); city driving ~50 km/h (31 mph); a jet cruises near 900 km/h (560 mph).

Referencefeet per secondmiles per hour
Brisk walk4.92 ft/s3.36 mph
Sprinting world record (avg)34.25 ft/s23.35 mph
City speed limit (50 km/h)45.57 ft/s31.07 mph
Highway cruising (100 km/h)91.14 ft/s62.14 mph
Commercial jet cruise820 ft/s559 mph

Mistakes to avoid with speed conversions

  • Dividing instead of multiplying by 3.6 when moving between m/s and km/h.
  • Assuming knots equal mph — a knot is ~15% faster (nautical miles per hour).
  • Comparing GPS speed (ground speed) with a car's speedometer, which reads slightly high by design.

Frequently asked questions

How many miles per hour in a feet per second?+

1 feet per second = 0.681818 miles per hour.

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

Enter the value in the feet per second box above and the miles per hour value appears instantly. You can also type in the miles per hour box to convert the other way.

Is this ft/s to mph converter free?+

Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.

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