Feet to Micrometers Converter

Enter the length in feet below to get the value converted to micrometers.


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Result in Micrometers:

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1 ft = 304,800 µm

Do you want to convert micrometers to feet?

How to Convert Feet to Micrometers

To convert a measurement in feet to a measurement in micrometers, multiply the length by the following conversion ratio: 304,800 micrometers/foot.

Since one foot is equal to 304,800 micrometers, you can use this simple formula to convert:

micrometers = feet × 304,800

The length in micrometers is equal to the length in feet multiplied by 304,800.

For example, here's how to convert 5 feet to micrometers using the formula above.
micrometers = (5' × 304,800) = 1,524,000 µm

How Many Micrometers Are in a Foot?

There are 304,800 micrometers in a foot, which is why we use this value in the formula above.

1' = 304,800 µm

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

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

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.[1]

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.

What Is a Micrometer?

One micrometer is equal to one-millionth (1/1,000,000) of a meter, which is defined as the distance light travels in a vacuum in a 1/299,792,458 second time interval.

The micrometer, or micrometre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "micro" is the prefix for millionths, or 10-6. A micrometer is sometimes also referred to as a micron. Micrometers can be abbreviated as µm; for example, 1 micrometer can be written as 1 µm.

To get an idea of the actual physical length of a micrometer, one human hair is 40-50 µm thick, demonstrating how small this unit of measure is.

Learn more about micrometers.

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.

Foot to Micrometer Conversion Table

Table showing various foot measurements converted to micrometers.
Feet Micrometers
0.00001' 3.048 µm
0.00002' 6.096 µm
0.00003' 9.144 µm
0.00004' 12.19 µm
0.00005' 15.24 µm
0.00006' 18.29 µm
0.00007' 21.34 µm
0.00008' 24.38 µm
0.00009' 27.43 µm
0.000001' 0.3048 µm
0.00001' 3.048 µm
0.0001' 30.48 µm
0.001' 304.8 µm
0.01' 3,048 µm
0.1' 30,480 µm
1' 304,800 µm


  1. National Institute of Standards and Technology, U.S. Survey Foot: Revised Unit Conversion Factors, https://www.nist.gov/pml/us-surveyfoot/revised-unit-conversion-factors

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