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Convert mm to microns

1 millimeter equals 1,000 micrometers. Enter a value below to convert instantly.

1 mm
1,000 µm

Multiply the number of millimeters by 1000 to get micrometers. How this is calculated

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Need the other direction? Convert micrometer to millimeter →

Formula

Multiply the number of millimeters by 1000 to get micrometers.

Step by step

  1. Start with 1 mm.
  2. Multiply by the conversion factor 1000.
  3. 1 × 1000 = 1,000 µm.

Millimeters to Micrometers conversion table

Millimeters (mm) Micrometers (µm)
1 1,000
2 2,000
3 3,000
5 5,000
10 10,000
20 20,000
50 50,000
100 100,000
500 500,000
1,000 1,000,000

Convert Millimeter to other length units

1 mm expressed in every other length unit on this site.

  • Meter m 0.001
  • Kilometer km 0.000001
  • Hectometer hm 0.00001
  • Dekameter dam 0.0001
  • Decimeter dm 0.01
  • Centimeter cm 0.1
  • Micrometer µm 1,000
  • Nanometer nm 1,000,000
  • Picometer pm 1,000,000,000
  • Femtometer fm 1,000,000,000,000
  • Attometer am 1e+15
  • Megameter Mm 1e-9
  • Gigameter Gm 1e-12
  • Terameter Tm 1e-15
  • Petameter Pm 1e-18
  • Exameter Em 1e-21
  • Angstrom Å 10,000,000
  • Mile mi 6.2137119e-7
  • Yard yd 0.0010936133
  • Foot ft 0.0032808399
  • Inch in 0.039370079
  • Kiloyard kyd 0.0000010936133
  • League lea 2.0712373e-7
  • Furlong fur 0.0000049709695
  • Chain ch 0.000049709695
  • Rod rd 0.00019883878
  • Perch perch 0.00019883878
  • Pole pole 0.00019883878
  • Rope rope 0.00016404199
  • Fathom fath 0.00054680665
  • Link li 0.0049709695
  • Hand hand 0.0098425197
  • Ell ell 0.00087489064
  • Barleycorn barleycorn 0.11811024
  • Mil mil 39.370079
  • Microinch µin 39,370.079
  • Caliber cl 3.9370079
  • Centiinch cin 3.9370079
  • Nautical Mile nmi 5.399568e-7
  • Nautical Mile (UK) NM (UK) 5.3961182e-7
  • Nautical League nl 1.799856e-7
  • Nautical League (UK) nl (UK) 1.7987061e-7
  • Mile (US survey) mi (US) 6.2136995e-7
  • Furlong (US survey) fur (US) 0.0000049709596
  • Chain (US survey) ch (US) 0.000049709596
  • Rod (US survey) rd (US) 0.00019883838
  • Fathom (US survey) fath (US) 0.00054680556
  • Foot (US survey) ft (US) 0.0032808333
  • Link (US survey) li (US) 0.0049709596
  • Inch (US survey) in (US) 0.03937
  • League (statute) st.league 2.0712332e-7
  • Pica pica 0.23622047
  • Point pt 2.8346457
  • Twip twip 56.692913
  • Light Year ly 1.0570008e-19
  • Astronomical Unit AU 6.6845871e-15
  • Parsec pc 3.2407793e-20
  • Kiloparsec kpc 3.2407793e-23
  • Megaparsec Mpc 3.2407793e-26
  • Earth's Equatorial Radius R⊕(eq) 1.5678559e-10
  • Earth's Polar Radius R⊕(pol) 1.5731304e-10
  • Earth's Distance from Sun d⊕☉ 6.684492e-15
  • Sun's Radius R☉ 1.4374012e-12
  • Bohr Radius a₀ 18,897,261
  • Electron Radius (classical) rₑ 354,869,120,000
  • Fermi F 1,000,000,000,000
  • X-unit X 9,979,243,200
  • Planck Length ℓP 6.1871425e+31
  • Mile (Roman) mi (Rom) 6.7576517e-7
  • Roman Actus actus 0.00002818591
  • Arpent arpent 0.000017087708
  • Cubit (UK) cubit 0.0021872266
  • Cubit (Greek) cubit (Gk) 0.0021608166
  • Long Cubit long cubit 0.0018747657
  • Reed reed 0.00036453777
  • Long Reed long reed 0.00031246094
  • Span (cloth) span 0.0043744532
  • Finger (cloth) finger 0.0087489064
  • Nail (cloth) nail 0.017497813
  • Handbreadth handbreadth 0.01312336
  • Fingerbreadth fingerbreadth 0.052493438
  • Aln aln 0.0016841317
  • Famn famn 0.00056137725
  • Ken ken 0.00047206329
  • Russian Archin archin 0.0014060742
  • Vara Castellana vara (cast) 0.0011973868
  • Vara Conuquera vara (con) 0.00039912894
  • Vara de Tarea vara (tarea) 0.00039912894
  • Ja (Korean foot) 자 0.0033
  • Chi 치 0.033
  • Pun 푼 0.33
  • Gan 간 0.00055
  • Jang 장 0.00033
  • Ri (Korean) 리 0.0000025462963

About the millimeter

The millimeter (mm) is a SI unit of length.

About the micrometer

The micrometer (µm) is a SI unit of length.

Where this conversion is used

Converting millimeters to micrometers comes up when measuring height, screen sizes, travel distances, fabric, and construction dimensions. Metric and Imperial length units are both in daily use, so quick conversion is often needed when following instructions from another country.

Related conversions

Frequently asked questions

How many micrometers are in a millimeter?

One millimeter equals 1,000 micrometers.

How do you convert millimeters to micrometers?

Multiply the number of millimeters by 1000 to get micrometers.

What is 1 micrometer in millimeters?

One micrometer equals 0.001 millimeters.

When would I convert millimeters to micrometers?

This conversion is common when measuring height, screen sizes, travel distances, fabric, and construction dimensions.

Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.