Millimeters to Feet Conversion (mm to ft)

How to Convert Millimeters to Feet

To convert a measurement in millimeters to a measurement in feet, multiply the length by the following conversion ratio: 0.003281 feet/millimeter.

Since one millimeter is equal to 0.003281 feet, you can use this simple formula to convert:

feet = millimeters × 0.003281

The length in feet is equal to the length in millimeters multiplied by 0.003281.

For example, here's how to convert 500 millimeters to feet using the formula above.

feet = (500 mm × 0.003281) = 1.64042'

Our inch fraction calculator can add millimeters and feet together, and it also automatically converts the results to US customary, imperial, and SI metric values.

Millimeters and feet are both units used to measure length. Keep reading to learn more about each unit of measure.

What Is a Millimeter?

One millimeter is equal to one-thousandth (1/1,000) of a meter, which is defined as the distance light travels in a vacuum in ¹/_299,792,458 of a second. One millimeter is equal to 0.0393701 inches.

The millimeter, or millimetre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "milli" is the prefix for thousandths, or 10^-3. Millimeters can be abbreviated as mm; for example, 1 millimeter can be written as 1 mm.

Millimeters are often represented by the smallest ticks on most metric rulers. To get a reference point of the size, the thickness of a US dime is 1.35mm.^[1]

Learn more about millimeters.

What Is a Foot?

The foot is a unit of length measurement equal to 12 inches or ¹/₃ of a yard. Because the international yard is legally defined to be equal to exactly 0.9144 meters, one foot is equal to 0.3048 meters.^[2]

The foot is a US customary and imperial unit of length. Feet can be abbreviated as ft; for example, 1 foot can be written as 1 ft.

Feet can also be denoted using the ′ symbol, otherwise known as a prime, though a single-quote (') is often used instead of the prime symbol for convenience. Using the prime symbol, 1 ft can be written as 1′.

Measurements in feet are most commonly taken using either a standard 12" ruler or a tape measure, though there are many other measuring devices available. Feet are sometimes referred to as linear feet, which are simply a measurement of length in feet.

You might be interested in our feet and inches calculator, which can add feet with other units of measurement such as inches, centimeters, or meters.

Learn more about feet.

We recommend using a ruler or tape measure for measuring length, which can be found at a local retailer or home center. Rulers are available in imperial, metric, or a combination of both values, so make sure you get the correct type for your needs.

Need a ruler? Try our free downloadable and printable rulers, which include both imperial and metric measurements.

Millimeters	Feet
1 mm	0.003281'
2 mm	0.006562'
3 mm	0.009843'
4 mm	0.013123'
5 mm	0.016404'
6 mm	0.019685'
7 mm	0.022966'
8 mm	0.026247'
9 mm	0.029528'
10 mm	0.032808'
20 mm	0.065617'
30 mm	0.098425'
40 mm	0.131234'
50 mm	0.164042'
60 mm	0.19685'
70 mm	0.229659'
80 mm	0.262467'
90 mm	0.295276'
100 mm	0.328084'
200 mm	0.656168'
300 mm	0.984252'
400 mm	1.3123'
500 mm	1.6404'
600 mm	1.9685'
700 mm	2.2966'
800 mm	2.6247'
900 mm	2.9528'
1,000 mm	3.2808'

Millimeters to Feet Converter

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Result in Feet:

How to Convert Millimeters to Feet

What Is a Millimeter?

What Is a Foot?

Millimeter to Foot Conversion Table

References

More Millimeter & Foot Conversions