mm → μm converter

Convert millimeters to micrometers (Length)

1 mm = 1000 μm · 1 μm = 0.001 mm

Common values: 20 mm 50 mm 100 mm 200 mm 500 mm

500 mm = 500000 μm

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Millimeters to micrometers Conversion

1 millimeters (mm) is equal to 1000 micrometers (μm).

1 mm = 1000 μm

or

1 μm = 0.001 mm

Formula

To convert a length from millimeters (mm) to micrometers (μm), multiply the length in millimeters by 1000

l(μm) = l(mm) × 1000

Examples:

Convert 500 millimeters to micrometers:

l(μm) = 500mm × 1000 = 500000 μm

Conversion table

Millimeters (mm) Micrometers (μm)
1 mm 1000 μm
2 mm 2000 μm
3 mm 3000 μm
5 mm 5000 μm
10 mm 10000 μm
20 mm 20000 μm
25 mm 25000 μm
50 mm 50000 μm
100 mm 100000 μm
200 mm 200000 μm
250 mm 250000 μm
500 mm 500000 μm
1000 mm 1000000 μm
Micrometers (μm) Millimeters (mm)
1 μm 0.001 mm
2 μm 0.002 mm
3 μm 0.003 mm
5 μm 0.005 mm
10 μm 0.01 mm
20 μm 0.02 mm
25 μm 0.025 mm
50 μm 0.05 mm
100 μm 0.1 mm
200 μm 0.2 mm
250 μm 0.25 mm
500 μm 0.5 mm
1000 μm 1 mm

Frequently asked questions

How do I convert millimeters to micrometers?

Multiply the value in millimeters by 1000 to get the result in micrometers. For example, 5 mm × 1000 = 5000 μm.

How many micrometers are in 1 millimeters?

1 millimeters (mm) is equal to 1000 micrometers (μm).

How do I convert micrometers back to millimeters?

Use the inverse operation: divide the value in micrometers by 1000 to get the result in millimeters.

How accurate is the millimeters to micrometers conversion?

The converter multiplies by the conversion factor 1000 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.

Sources

Conversion factors are based on internationally recognised standards: