Mile/Second to Foot/Second Converter

Speed Converter

18 units available

Decimals:

From

To

5,280

1 mi/s = 5,280 ft/s

Formula:

ft/s = mi/s × 5,280

With your value: 1 mi/s = 5,280 ft/s

How big is that?

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

Urban speed limit (50 km/h) (1/1.2e+2 your value)0.00864 mi/s

Cheetah sprint (1/55 your value)0.0180 mi/s

Motorway (110 km/h) (1/53 your value)0.0190 mi/s

Airliner cruise (1/6.4 your value)0.155 mi/s

Speed of sound (sea level) (1/4.7 your value)0.213 mi/s

Your value1.00 mi/s

Other Mile/Second to Foot/Second conversions

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

Mile/Second to Foot/Second Conversion Table

Mile/Second (mi/s)	Foot/Second (ft/s)
0.5	2,640
1	5,280
2	10,560
5	26,400
10	52,800
15	79,200
20	105,600
25	132,000
50	264,000
100	528,000
250	1,320,000
500	2,640,000
1000	5,280,000

Foot/Second to Mile/Second Conversion Table

Foot/Second (ft/s)	Mile/Second (mi/s)
0.5	9.469697e-5
1	0.000189
2	0.000379
5	0.000947
10	0.001894
15	0.002841
20	0.003788
25	0.004735
50	0.00947
100	0.018939
250	0.047348
500	0.094697
1000	0.189394

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/Second (mi/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

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/Second to Foot/Second

To convert from Mile/Second (mi/s) to Foot/Second (ft/s), multiply the value by 5,280.

Formula: ft/s = mi/s × 5,280

Reverse: mi/s = ft/s × 0.0001893939

Step-by-Step Example

Start with your value in Mile/Second. For example: 5 mi/s
Multiply by the conversion factor: 5 x 5,280
The result is: 26,400 ft/s

About Mile/Second

The mile/second (mi/s) is a unit of speed and velocity. One mile/second equals 1609.344 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.

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/Second?

There are exactly 5,280 Foot/Second in 1 Mile/Second. This means the conversion factor from Mile/Second to Foot/Second is 5,280.

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

The formula to convert Mile/Second to Foot/Second is: ft/s = mi/s × 5,280. For example, to convert 10 Mile/Second to Foot/Second, you would multiply 10 by 5,280.

What is a Mile/Second?