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Convert mm to μm
Interactive millimeters to micrometers conversion tool
The mm to μm converter below can be used to quickly and easily convert millimeters to micrometers. Simply enter the number of millimeters you want to convert and the calculator will output the corresponding value in micrometers.
What is the conversion factor between millimeters and micrometers?
A conversion factor is used to change the units of a measured quantity without changing its value. It represents the ratio (or fraction) that expresses the relationship between two different units. A conversion factor is always equal to 1.
The relationship between millimeters and micrometers is 1000, such as:
Following the formula above, we can see that there are 1000 micrometers for every millimeter, and for every micrometer, there are 11000 millimeters (0.001 mm).
To convert from millimeters to micrometers, we turn our formula into a conversion factor that is equal to 1.
Both these fractions are equal to 1. The numerator and the denominator are equivalent, they are just expressed in different units.
Because we are converting from millimeter to micrometer, we will use the first fraction: 1000 μm1 mm so that millimeters are canceled out. We then multiply the value in millimeters by this fraction to get the result in micrometers (see example).
Note that mm is in the denominator (bottom) of the conversion factor. This is important, you always want to have the unit you are converting from at the bottom and the unit you are converting to in the numerator (top).
You will find below how to use this ratio to convert from mm to μm. Just remember for now that the conversion factor for converting from millimeters to micrometers is:
Which is bigger, a millimeter or a micrometer?
When it comes to measurements, there can be some confusion over which is bigger, a millimeter or an micrometer. To find out which one is larger, we must first convert one unit to the other and then compare them.
- 1 mm = 1000 μm
- 1000 micrometers is bigger than 1 micrometer.
- 1 millimeter is, therefore, bigger than 1 micrometer.
- To be more specific, a micrometer is 1000 times smaller than a millimeter.
millimeters to micrometers conversion table
| millimeters | micrometers | millimeters | micrometers |
|---|---|---|---|
| 1 mm | 1000 μm | 11 mm | 11000 μm |
| 2 mm | 2000 μm | 12 mm | 12000 μm |
| 3 mm | 3000 μm | 13 mm | 13000 μm |
| 4 mm | 4000 μm | 14 mm | 14000 μm |
| 5 mm | 5000 μm | 15 mm | 15000 μm |
| 6 mm | 6000 μm | 16 mm | 16000 μm |
| 7 mm | 7000 μm | 17 mm | 17000 μm |
| 8 mm | 8000 μm | 18 mm | 18000 μm |
| 9 mm | 9000 μm | 19 mm | 19000 μm |
| 10 mm | 10000 μm | 20 mm | 20000 μm |
How to convert millimeters to micrometers?
Multiplying any value by 1 will get you the same value back. You can do that one time or multiple times.
For example:
- 31 x 1 = 31
- 925 x 1 x 1 x 1 = 925
Multiplying by 1 is the first step in any unit conversion problem. The second step is to replace the number 1 with the conversion factor that is also equal to 1.
For example, if we want to convert 0.001 millimeters into micrometers we multiply 0.001 mm by the conversion factor of 1000 μm1 mm
By replacing the number 1 with the conversion factor, millimeters are canceled out and we get the result in micrometers. And since the conversion factor is equal to 1, multiplying it with the original value won't change its magnitude and will only change its unit.
Based on this, we can conclude that 0.001 millimeters are equal to 1 micrometers.
Remember:
- When converting from millimeters to micrometers, we use 1000 μm1 mm as a conversion factor.
Practice: millimeters to micrometers conversion
Try answering the following questions without using our custom conversion calculator. Knowing how to convert manually between millimeters and micrometers could prove to be useful, so give it a shot. Once you are confident you can convert millimeters to micrometers, there is no harm then in taking full advantage of the tools available to you.
How to convert 40 millimeters to micrometers?
We multiply 40 by the factor of 1
We replace the number 1 with the conversion factor for millimeters to micrometers
We multiply 40 millimeters by the conversion factor. Having millimeters in the denominator allows us to cancel out the undesired units (mm) leaving only micrometers in the final result.
Answer: There are 40000 micrometers in 40 millimeters
How many micrometers are in 555 millimeters?
Multiply 555 by the conversion factor. Make sure the unwanted unit (mm) is in the denominator.
This allows us to cancel out the millimeters (mm) and leave the micrometers (μm)
Answer: There are 555000 micrometers in 555 millimeters
micrometers to millimeters conversion
- 1 μm = 11000 mm = 0.001 mm
- To convert from micrometers to millimeters use our μm to mm converter
millimeters conversion
Convert from Millimeters (mm):
- Millimeters to kilometers (mm to km)
1 mm = 11e+6 km = 1e-6 km - Millimeters to meters (mm to m)
1 mm = 11000 m = 0.001 m - Millimeters to centimeters (mm to cm)
1 mm = 110 cm = 0.1 cm - Millimeters to micrometers (mm to μm)
1 mm = 1000 μm - Millimeters to nanometers (mm to nm)
1 mm = 1e+6 nm - Millimeters to nautical miles (mm to nmi)
1 mm = 11.852e+6 nmi = 5.399568035e-7 nmi - Millimeters to miles (mm to mi)
1 mm = 11.609344e+6 mi = 6.213711922e-7 mi - Millimeters to yards (mm to yd)
1 mm = 1914.4 yd = 0.001093613298 yd - Millimeters to feet (mm to ft)
1 mm = 1304.8 ft = 0.003280839895 ft - Millimeters to inches (mm to in)
1 mm = 125.4 in = 0.03937007874 in
Convert to Millimeters (mm):
- Kilometers to millimeters (km to mm)
1 km = 1e+6 mm - Meters to millimeters (m to mm)
1 m = 1000 mm - Centimeters to millimeters (cm to mm)
1 cm = 10 mm - Micrometers to millimeters (μm to mm)
1 μm = 11000 mm = 0.001 mm - Nanometers to millimeters (nm to mm)
1 nm = 11e+6 mm = 1e-6 mm - Nautical miles to millimeters (nmi to mm)
1 nmi = 1.852e+6 mm - Miles to millimeters (mi to mm)
1 mi = 1.609344e+6 mm - Yards to millimeters (yd to mm)
1 yd = 914.4 mm - Feet to millimeters (ft to mm)
1 ft = 304.8 mm - Inches to millimeters (in to mm)
1 in = 25.4 mm
micrometers conversion
Convert from Micrometers (μm):
- Micrometers to kilometers (μm to km)
1 μm = 11e+9 km = 1e-9 km - Micrometers to meters (μm to m)
1 μm = 11e+6 m = 1e-6 m - Micrometers to centimeters (μm to cm)
1 μm = 110000 cm = 1e-4 cm - Micrometers to millimeters (μm to mm)
1 μm = 11000 mm = 0.001 mm - Micrometers to nanometers (μm to nm)
1 μm = 1000 nm - Micrometers to nautical miles (μm to nmi)
1 μm = 11.852e+9 nmi = 5.399568035e-10 nmi - Micrometers to miles (μm to mi)
1 μm = 11.609344e+9 mi = 6.213711922e-10 mi - Micrometers to yards (μm to yd)
1 μm = 1914400 yd = 1.093613298e-6 yd - Micrometers to feet (μm to ft)
1 μm = 1304800 ft = 3.280839895e-6 ft - Micrometers to inches (μm to in)
1 μm = 125400 in = 3.937007874e-5 in
Convert to Micrometers (μm):
- Kilometers to micrometers (km to μm)
1 km = 1e+9 μm - Meters to micrometers (m to μm)
1 m = 1e+6 μm - Centimeters to micrometers (cm to μm)
1 cm = 10000 μm - Millimeters to micrometers (mm to μm)
1 mm = 1000 μm - Nanometers to micrometers (nm to μm)
1 nm = 11000 μm = 0.001 μm - Nautical miles to micrometers (nmi to μm)
1 nmi = 1.852e+9 μm - Miles to micrometers (mi to μm)
1 mi = 1.609344e+9 μm - Yards to micrometers (yd to μm)
1 yd = 914400 μm - Feet to micrometers (ft to μm)
1 ft = 304800 μm - Inches to micrometers (in to μm)
1 in = 25400 μm