How to convert millimeters to micrometers
To convert millimeters (mm) to micrometers (µm), multiply the value in millimeters by 1,000.
µm = mm × 1,000
Example: 10 mm = 10,000 µm.
You can also type 10 mm to µm into the smart calculator, or mix units: 1 mm + 1 µm.
Millimeters to Micrometers conversion table
| Millimeters | Micrometers |
|---|---|
| 0.01 mm | 10 µm |
| 0.1 mm | 100 µm |
| 0.25 mm | 250 µm |
| 0.5 mm | 500 µm |
| 1 mm | 1,000 µm |
| 2 mm | 2,000 µm |
| 3 mm | 3,000 µm |
| 4 mm | 4,000 µm |
| 5 mm | 5,000 µm |
| 6 mm | 6,000 µm |
| 7 mm | 7,000 µm |
| 8 mm | 8,000 µm |
| 9 mm | 9,000 µm |
| 10 mm | 10,000 µm |
| 12 mm | 12,000 µm |
| 15 mm | 15,000 µm |
| 20 mm | 20,000 µm |
| 25 mm | 25,000 µm |
| 30 mm | 30,000 µm |
| 40 mm | 40,000 µm |
| 50 mm | 50,000 µm |
| 60 mm | 60,000 µm |
| 75 mm | 75,000 µm |
| 100 mm | 100,000 µm |
| 250 mm | 250,000 µm |
| 500 mm | 500,000 µm |
| 1,000 mm | 1,000,000 µm |
Converting micrometers back to millimeters
1 µm = 0.001 mm. See the Micrometers to Millimeters converter, or press the swap button above.
About the units
Millimeter (mm)
One thousandth of a meter. Ten millimeters make a centimeter.
Micrometer (µm)
One millionth of a meter, also called a micron.
Length measures distance in one dimension. The SI base unit is the meter, defined by the distance light travels in a vacuum in 1/299,792,458 of a second. Since the 1959 international yard and pound agreement, imperial and US customary lengths are defined exactly in meters: an inch is exactly 2.54 centimeters.
Questions and answers
How many micrometers are in a millimeter?
One millimeter (mm) equals 1,000 micrometers (µm).
How do I convert millimeters to micrometers?
To convert millimeters to micrometers, multiply the value in millimeters by 1,000. The formula is µm = mm × 1,000. For example, 10 mm = 10,000 µm.
What is 10 mm in µm?
10 millimeters is 10,000 micrometers.
Which is bigger, a millimeter or a micrometer?
A millimeter is bigger: 1 mm = 1,000 µm.
How many centimeters are in a foot?
A foot is exactly 30.48 centimeters, because an inch is defined as exactly 2.54 cm and a foot is 12 inches.
Does this mm to µm converter work offline?
Yes. ConvertEasy is a progressive web app: after your first visit it keeps working with no connection, and you can install it to your home screen from the browser menu.