Select a category and enter your values below
To convert from Micrometer (μm) to Millimeter (mm), use the following formula:
Millimeter (mm)
= 1106 × 1000× Micrometer (μm)
= 11000× Micrometer (μm)
= 0.001× Micrometer (μm)
Let's convert 5 Micrometer (μm) to Millimeter (mm).
Using the formula:
5 × 0.001 = 0.005
Therefore, 5 Micrometer (μm) is equal to 0.005 Millimeter (mm).
How many micrometers are in one millimeter? One Millimeter (mm) contains 1000 Micrometers (μm) — the inverse of the factor above. Multiplying by 0.001 takes you from micrometers to millimeters; multiplying by 1000 brings you back.
Put in words: one micrometer equals 0.001 millimeters, so the micrometer is the smaller unit of this pair. Converting between them never changes the amount of length being measured — only the size of the unit you count it in.
A micrometer (μm), commonly referred to as a micron, is a unit of length in the metric system.
It is extremely small, equal to one millionth of a meter (10-6 m).
The micrometer may be tiny, but it's indispensable wherever extreme precision is required. Here are some examples of how it's used across different industries:
Electronics manufacturing: Parts like transistors, traces, and other microchip features are measured in micrometers. Modern CPUs and memory chips depend on manufacturing at these microscopic scales.
Aerospace engineering: Components are machined to micrometer tolerances, ensuring they fit and perform reliably under extreme stress and temperature conditions.
Medical devices: Stents, catheters, and many surgical tools must be produced with micrometer-level accuracy to ensure patient safety and proper function.
Textiles: Fiber diameters—such as wool, silk, and synthetic fibers—are measured in micrometers to assess softness, strength, and the best uses for each material.
Small unit, significant impact: micrometer-level precision underpins quality, safety, and performance across many fields.
It can be hard to grasp just how small a micrometer is.
To put this micrometer size comparison into perspective, consider these examples:
These comparisons highlight the incredible microscopic scale the micrometer represents, far smaller than anything the naked eye can perceive.
Yes, they are the same.
The official name for this unit in the International System of Units (SI) is the micrometer; however, it is often still referred to by its older name, the micron.
The term "micron" was officially retired in 1967 to standardize terminology and prevent confusion. Nonetheless, it remains commonly used in various industries and scientific contexts due to habit.
Therefore, when you encounter a measurement in microns, it is equivalent to a micrometer (1×10-6 meters).
A millimeter (mm) is a small unit of length in the metric system, equal to one-thousandth of a meter (1/1000 m or 0.001 m).
The word itself comes from the Latin "mille," meaning "thousand."
This is why the prefix "milli" in the metric system always means one-thousandth of a base unit—just like a milligram is one-thousandth of a gram.
The plural form is millimeters.
Understanding the relationship between millimeters and inches is crucial, particularly for projects that utilize both metric and imperial systems.
The official mm-to-inch conversion is a precise measurement used worldwide in engineering and manufacturing.
The millimeter is the standard unit for measuring small distances with precision.
You likely encounter millimeter measurements more often than you think in daily life, science, and technology.
Here are some quick reference conversions from Micrometer (μm) to Millimeter (mm):
| Micrometers | Millimeters |
|---|---|
| 0.000001 μm | 10-9 mm |
| 0.001 μm | 10-6 mm |
| 0.1 μm | 10-4 mm |
| 1 μm | 0.001 mm |
| 2 μm | 0.002 mm |
| 3 μm | 0.003 mm |
| 4 μm | 0.004 mm |
| 5 μm | 0.005 mm |
| 6 μm | 0.006 mm |
| 7 μm | 0.007 mm |
| 8 μm | 0.008 mm |
| 9 μm | 0.009 mm |
| 10 μm | 0.01 mm |
| 20 μm | 0.02 mm |
| 30 μm | 0.03 mm |
| 40 μm | 0.04 mm |
| 50 μm | 0.05 mm |
| 100 μm | 0.1 mm |
| 1000 μm | 1 mm |
| 10000 μm | 10 mm |
For all Length converters, choose units using the From/To dropdowns above.