Mile/Hour to Foot/Second Converter

Speed Converter

18 units available

Decimals:

From

To

1.466667

1 mph = 1.466667 ft/s

Formula:

ft/s = mph × 1.4666666667

With your value: 1 mph = 1.46666667 ft/s

How big is that?

Everyday references on a logarithmic scale, all expressed in mile/hour so you can sanity-check the result.

Your value1.00 mph

Walking pace (3.1× your value)3.13 mph

Cycling (12× your value)12.3 mph

Urban speed limit (50 km/h) (31× your value)31.1 mph

Cheetah sprint (65× your value)64.9 mph

Motorway (110 km/h) (68× your value)68.5 mph

Other Mile/Hour to Foot/Second conversions

2 mph to ft/s 3 mph to ft/s 4 mph to ft/s 5 mph to ft/s 6 mph to ft/s 7 mph to ft/s 8 mph to ft/s

Mile/Hour to Foot/Second Conversion Table

Mile/Hour (mph)	Foot/Second (ft/s)
0.5	0.733333
1	1.466667
2	2.933333
5	7.333333
10	14.666667
15	22
20	29.333333
25	36.666667
50	73.333333
100	146.666667
250	366.666667
500	733.333333
1000	1,466.666667

Foot/Second to Mile/Hour Conversion Table

Foot/Second (ft/s)	Mile/Hour (mph)
0.5	0.340909
1	0.681818
2	1.363636
5	3.409091
10	6.818182
15	10.227273
20	13.636364
25	17.045455
50	34.090909
100	68.181818
250	170.454545
500	340.909091
1000	681.818182

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Mile/Hour (mph)

Speed

Exact conversion

Derived quantity: a defined length divided by a defined time interval.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Foot/Second (ft/s)

Speed

Exact conversion

Derived quantity: a defined length divided by a defined time interval.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

How to Convert Mile/Hour to Foot/Second

To convert from Mile/Hour (mph) to Foot/Second (ft/s), multiply the value by 1.4666666667.

Formula: ft/s = mph × 1.4666666667

Reverse: mph = ft/s × 0.6818181818

Step-by-Step Example

Start with your value in Mile/Hour. For example: 5 mph
Multiply by the conversion factor: 5 x 1.4666666667
The result is: 7.333333 ft/s

About Mile/Hour

Miles per hour is the standard unit of speed in the US and UK for vehicles and weather reporting.

Common uses: speed limits (US/UK), vehicle speed, baseball.

About Foot/Second

The foot/second (ft/s) is a unit of speed and velocity. One foot/second equals 0.3048 metre per seconds. UnitConvertLab converts it against every other speed unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: speed calculations, engineering and science, education.

Frequently Asked Questions

How many Foot/Second are in 1 Mile/Hour?

There are exactly 1.4666666667 Foot/Second in 1 Mile/Hour. This means the conversion factor from Mile/Hour to Foot/Second is 1.4666666667.

What is the formula to convert Mile/Hour to Foot/Second?

The formula to convert Mile/Hour to Foot/Second is: ft/s = mph × 1.4666666667. For example, to convert 10 Mile/Hour to Foot/Second, you would multiply 10 by 1.4666666667.

What is a Mile/Hour?