UnitFlip
Saved
Length

Convert mm to cm

1 millimeter equals 0.1 centimeters. Enter a value below to convert instantly.

1 mm
0.1 cm

Multiply the number of millimeters by 0.1 to get centimeters. How this is calculated

Copy link puts your number after the #, which browsers never send to a server — but the link itself carries it, so anyone you send it to sees the value. Save keeps the unit pair in this browser only; clear it any time from your saved list.

Need the other direction? Convert centimeter to millimeter →

Formula

Multiply the number of millimeters by 0.1 to get centimeters.

Step by step

  1. Start with 1 mm.
  2. Multiply by the conversion factor 0.1.
  3. 1 × 0.1 = 0.1 cm.

Millimeters to Centimeters conversion table

Millimeters (mm) Centimeters (cm)
1 0.1
2 0.2
3 0.3
5 0.5
10 1
20 2
50 5
100 10
500 50
1,000 100

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 centimeter

The centimeter (cm) is a SI unit of length.

Where this conversion is used

Converting millimeters to centimeters 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 centimeters are in a millimeter?

One millimeter equals 0.1 centimeters.

How do you convert millimeters to centimeters?

Multiply the number of millimeters by 0.1 to get centimeters.

What is 1 centimeter in millimeters?

One centimeter equals 10 millimeters.

When would I convert millimeters to centimeters?

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.