Millimeter/Second to Foot/Second Converter

Speed Converter

18 units available

Decimals:

From

To

0.003281

1 mm/s = 0.003281 ft/s

Formula:

ft/s = mm/s × 0.0032808399

With your value: 1 mm/s = 0.00328084 ft/s

How big is that?

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

Your value1.00 mm/s

Walking pace (1.4e+3× your value)1.40e+3 mm/s

Cycling (5.5e+3× your value)5.50e+3 mm/s

Urban speed limit (50 km/h) (1.4e+4× your value)1.39e+4 mm/s

Cheetah sprint (2.9e+4× your value)2.90e+4 mm/s

Motorway (110 km/h) (3.1e+4× your value)3.06e+4 mm/s

Other Millimeter/Second to Foot/Second conversions

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

Millimeter/Second to Foot/Second Conversion Table

Millimeter/Second (mm/s)	Foot/Second (ft/s)
0.5	0.00164
1	0.003281
2	0.006562
5	0.016404
10	0.032808
15	0.049213
20	0.065617
25	0.082021
50	0.164042
100	0.328084
250	0.82021
500	1.64042
1000	3.28084

Foot/Second to Millimeter/Second Conversion Table

Foot/Second (ft/s)	Millimeter/Second (mm/s)
0.5	152.4
1	304.8
2	609.6
5	1,524
10	3,048
15	4,572
20	6,096
25	7,620
50	15,240
100	30,480
250	76,200
500	152,400
1000	304,800

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.

Millimeter/Second (mm/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 Millimeter/Second to Foot/Second

To convert from Millimeter/Second (mm/s) to Foot/Second (ft/s), multiply the value by 0.0032808399.

Formula: ft/s = mm/s × 0.0032808399

Reverse: mm/s = ft/s × 304.8

Step-by-Step Example

Start with your value in Millimeter/Second. For example: 5 mm/s
Multiply by the conversion factor: 5 x 0.0032808399
The result is: 0.016404 ft/s

About Millimeter/Second

The millimeter/second (mm/s) is a unit of speed and velocity. One millimeter/second equals 0.001 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 Millimeter/Second?

There are exactly 0.0032808399 Foot/Second in 1 Millimeter/Second. This means the conversion factor from Millimeter/Second to Foot/Second is 0.0032808399.

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

The formula to convert Millimeter/Second to Foot/Second is: ft/s = mm/s × 0.0032808399. For example, to convert 10 Millimeter/Second to Foot/Second, you would multiply 10 by 0.0032808399.

What is a Millimeter/Second?