Millimeter (mm)
A millimeter is one thousandth of a meter — the metric workhorse for fine measurements and manufacturing tolerances.
Millimeters are used in engineering drawings, rainfall totals, and anywhere sub-centimeter precision matters.
Millimeter to Centimeter
Convert millimeter to centimeter instantly. Type in either field — results update live.
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Length Millimeter Centimeter
1 millimeter = 0.1 centimeters
Unit
Unit
Conversion table
Selected mm values converted to cm using the exact factor from this tool.
| mm | cm |
|---|---|
| 0.01 | 0.001 |
| 0.1 | 0.01 |
| 1 | 0.1 |
| 2 | 0.2 |
| 3 | 0.3 |
| 5 | 0.5 |
| 10 | 1 |
| 20 | 2 |
| 50 | 5 |
| 100 | 10 |
| 1,000 | 100 |
How to convert
Exact conversion factors in both directions, plus a worked example.
1 mm = 0.1 cm
1 cm = 10 mm
To convert millimeter to centimeter, multiply by 0.1.
To convert centimeter to millimeter, multiply by 10.
Example: convert 15 mm to cm
15 × 0.1 = 1.5 cm
About these units
Short background on the units used in this conversion.
Centimeter (cm)
A centimeter is one hundredth of a meter, sitting between the millimeter and the meter on the metric scale.
Centimeters are common on rulers, in clothing and body measurements worldwide, and in school science labs.
Frequently asked questions
How many centimeters are in one millimeter?
One millimeter equals 0.1 centimeters. Multiply your millimeters value by 0.1 to convert to centimeters.
What is the conversion formula?
cm = mm × 0.1The reverse is
mm = cm × 10, using the same exact factors as this converter.Is this Millimeter to Centimeter converter private?
Yes. All calculations run locally in your browser. Nothing you type is sent to a server.
All millimeter conversions
Jump to any length conversion starting from millimeter — including the reverse direction and every other unit in our dataset.
centimeter (cm) → millimeter (mm)
millimeter (mm) → kilometer (km)millimeter (mm) → meter (m)millimeter (mm) → decimeter (dm)millimeter (mm) → micrometer (µm)millimeter (mm) → nanometer (nm)millimeter (mm) → mile (mi)millimeter (mm) → yard (yd)millimeter (mm) → foot (ft)millimeter (mm) → inch (in)millimeter (mm) → light year (ly)millimeter (mm) → exameter (Em)millimeter (mm) → petameter (Pm)millimeter (mm) → terameter (Tm)millimeter (mm) → gigameter (Gm)millimeter (mm) → megameter (Mm)millimeter (mm) → hectometer (hm)millimeter (mm) → dekameter (dam)millimeter (mm) → micron (µ)millimeter (mm) → picometer (pm)millimeter (mm) → femtometer (fm)millimeter (mm) → attometer (am)millimeter (mm) → megaparsec (Mpc)millimeter (mm) → kiloparsec (kpc)millimeter (mm) → parsec (pc)millimeter (mm) → astronomical unit (AU)millimeter (mm) → league (lea)millimeter (mm) → nautical league (uk)millimeter (mm) → nautical league (int.)millimeter (mm) → league (statute) (st.league)millimeter (mm) → nautical mile (uk) (NM-UK)millimeter (mm) → nautical mile (international) (nmi)millimeter (mm) → mile (statute)millimeter (mm) → mile (us survey)millimeter (mm) → mile (roman) (mi-Roman)millimeter (mm) → kiloyard (kyd)millimeter (mm) → furlong (fur)millimeter (mm) → furlong (us survey)millimeter (mm) → chain (ch)millimeter (mm) → chain (us survey)millimeter (mm) → ropemillimeter (mm) → rod (rd)millimeter (mm) → rod (us survey)millimeter (mm) → perchmillimeter (mm) → polemillimeter (mm) → fathom (fath)millimeter (mm) → fathom (us survey)millimeter (mm) → ellmillimeter (mm) → foot (us survey)millimeter (mm) → link (li)millimeter (mm) → link (us survey)millimeter (mm) → cubit (uk)millimeter (mm) → handmillimeter (mm) → span (cloth)millimeter (mm) → finger (cloth)millimeter (mm) → nail (cloth)millimeter (mm) → inch (us survey)millimeter (mm) → barleycornmillimeter (mm) → milmillimeter (mm) → microinch (µin)millimeter (mm) → angstrom (Å)millimeter (mm) → a.u. of lengthmillimeter (mm) → x-unit (X)millimeter (mm) → fermi (F)millimeter (mm) → arpentmillimeter (mm) → picamillimeter (mm) → point (pt)millimeter (mm) → twipmillimeter (mm) → alnmillimeter (mm) → famnmillimeter (mm) → caliber (cl)millimeter (mm) → centiinch (cin)millimeter (mm) → kenmillimeter (mm) → russian archin (archin)millimeter (mm) → roman actus (actus)millimeter (mm) → vara de tareamillimeter (mm) → vara conuqueramillimeter (mm) → vara castellanamillimeter (mm) → cubit (greek)millimeter (mm) → long reedmillimeter (mm) → reedmillimeter (mm) → long cubitmillimeter (mm) → handbreadthmillimeter (mm) → fingerbreadthmillimeter (mm) → planck lengthmillimeter (mm) → electron radius (classical) (re)millimeter (mm) → bohr radius (b)millimeter (mm) → earth's equatorial radius (R⊕eq)millimeter (mm) → earth's polar radius (R⊕pol)millimeter (mm) → earth's distance from sunmillimeter (mm) → sun's radius