Foot/Second to Inch/Second Converter

Speed Converter

18 units available

Decimals:

From

To

12

1 ft/s = 12 in/s

Formula:

in/s = ft/s × 12

With your value: 1 ft/s = 12 in/s

How big is that?

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

Your value1.00 ft/s

Walking pace (4.6× your value)4.59 ft/s

Cycling (18× your value)18.0 ft/s

Urban speed limit (50 km/h) (46× your value)45.6 ft/s

Cheetah sprint (95× your value)95.1 ft/s

Motorway (110 km/h) (1.0e+2× your value)100 ft/s

Other Foot/Second to Inch/Second conversions

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

Foot/Second to Inch/Second Conversion Table

Foot/Second (ft/s)	Inch/Second (in/s)
0.5	6
1	12
2	24
5	60
10	120
15	180
20	240
25	300
50	600
100	1,200
250	3,000
500	6,000
1000	12,000

Inch/Second to Foot/Second Conversion Table

Inch/Second (in/s)	Foot/Second (ft/s)
0.5	0.041667
1	0.083333
2	0.166667
5	0.416667
10	0.833333
15	1.25
20	1.666667
25	2.083333
50	4.166667
100	8.333333
250	20.833333
500	41.666667
1000	83.333333

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.

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

Inch/Second (in/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 Foot/Second to Inch/Second

To convert from Foot/Second (ft/s) to Inch/Second (in/s), multiply the value by 12.

Formula: in/s = ft/s × 12

Reverse: ft/s = in/s × 0.0833333333

Step-by-Step Example

Start with your value in Foot/Second. For example: 5 ft/s
Multiply by the conversion factor: 5 x 12
The result is: 60 in/s

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.

About Inch/Second

The inch/second (in/s) is a unit of speed and velocity. One inch/second equals 0.0254 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 Inch/Second are in 1 Foot/Second?

There are exactly 12 Inch/Second in 1 Foot/Second. This means the conversion factor from Foot/Second to Inch/Second is 12.

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

The formula to convert Foot/Second to Inch/Second is: in/s = ft/s × 12. For example, to convert 10 Foot/Second to Inch/Second, you would multiply 10 by 12.

What is a Foot/Second?