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Centimeters to Millimeters Converter (cm to mm)

1 cm = 10 mm. Type any value to convert centimeters to millimeters.

1 cm = 10 mm

Formula: mm = cm × 10

Common values
Decimals
In every unit 22 units
Nanometer (nm) 10,000,000 nm
Micrometer (µm) 10,000 µm
Millimeter (mm) 10 mm
Centimeter (cm) 1 cm
Decimeter (dm) 0.1 dm
Meter (m) 0.01 m
Kilometer (km) 0.00001 km
Inch (in) 0.3937007874 in
Foot (ft) 0.03280839895 ft
Yard (yd) 0.01093613298 yd
Mile (mi) 0.000006213711922 mi
Nautical mile (nmi) 0.000005399568035 nmi
Mil (thou) (mil) 393.7007874 mil
Hand (hh) 0.09842519685 hh
Fathom (ftm) 0.005468066492 ftm
Chain (ch) 0.0004970969538 ch
Furlong (fur) 0.00004970969538 fur
League (lea) 0.000002071237307 lea
Ångström (Å) 100,000,000 Å
Astronomical unit (au) 6.684587122 × 10⁻¹⁴ au
Light-year (ly) 1.057000834 × 10⁻¹⁸ ly
Parsec (pc) 3.240779289 × 10⁻¹⁹ pc

Convert on our server?

If you continue, the file is uploaded over an encrypted connection and converted on our server. You can keep using the site meanwhile. The original is deleted as soon as it is converted; the result is kept for 6 hours so you can download it, and you can delete it at any time. Files are never shared or used for anything else.

Calculated in your browser – nothing you type is sent anywhere. Privacy details

Centimeters to millimeters table

Formula: mm = cm × 10

Centimeter (cm)Millimeter (mm)
0.1 cm1 mm
0.25 cm2.5 mm
0.5 cm5 mm
1 cm10 mm
2 cm20 mm
3 cm30 mm
4 cm40 mm
5 cm50 mm
6 cm60 mm
7 cm70 mm
8 cm80 mm
9 cm90 mm
10 cm100 mm
12 cm120 mm
15 cm150 mm
20 cm200 mm
25 cm250 mm
30 cm300 mm
40 cm400 mm
50 cm500 mm
60 cm600 mm
75 cm750 mm
100 cm1,000 mm
150 cm1,500 mm
200 cm2,000 mm
250 cm2,500 mm
500 cm5,000 mm
1,000 cm10,000 mm

How to use: Centimeters to Millimeters

  1. 1 Type the value in centimeters.
  2. 2 The result in millimeters appears at once – or type in the millimeters field to convert back.
  3. 3 Pick a common value, round to fewer decimals or swap the units with one click.
  4. 4 Copy the result, or open “In every unit” to see the value in all units of length.

About this tool

Centimeter (cm) is a unit of length (SI); 1 cm = 0.01 m. Millimeter (mm) is a unit of length (SI); 1 mm = 0.001 m.

To convert centimeters to millimeters, multiply the value by 10 (mm = cm × 10). Example: 10 cm = 100 mm.

Calculated in your browser – nothing you type is sent anywhere.

Frequently asked questions

How do I convert centimeters to millimeters?

To convert centimeters to millimeters, multiply the value by 10: mm = cm × 10. For example 10 cm = 100 mm.

What is 1 cm in millimeters?

1 cm = 10 mm. The other way round, 1 mm = 0.1 cm.

How exact is the result?

The converter uses the official definitions of both units and shows up to 10 significant digits; choose 0–6 decimals to round. Both units are defined exactly in terms of each other, so the factor itself is exact.

Can I convert other units of length here?

Yes – choose any of the 22 units of length in the From and To lists, or switch to another measurement at the top.

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