Millimeter to Centimeter Converter

Length Converter

31 units available

Decimals:

From

To

0.1

1 mm = 0.1 cm

Formula:

cm = mm × 0.1

With your value: 1 mm = 0.1 cm

How big is that?

Everyday references on a logarithmic scale, all expressed in millimeter so you can sanity-check the result.

Grain of sand (1/2.0 your value)0.500 mm

Your value1.00 mm

Credit card (long side) (86× your value)85.6 mm

A4 sheet (height) (3.0e+2× your value)297 mm

Adult stride (7.5e+2× your value)750 mm

Standard door height (2.0e+3× your value)2.00e+3 mm

Other Millimeter to Centimeter conversions

2 mm to cm 3 mm to cm 4 mm to cm 5 mm to cm 6 mm to cm 7 mm to cm 8 mm to cm

Millimeter to Centimeter Conversion Table

Millimeter (mm)	Centimeter (cm)
0.5	0.05
1	0.1
2	0.2
5	0.5
10	1
15	1.5
20	2
25	2.5
50	5
100	10
250	25
500	50
1000	100

Centimeter to Millimeter Conversion Table

Centimeter (cm)	Millimeter (mm)
0.5	5
1	10
2	20
5	50
10	100
15	150
20	200
25	250
50	500
100	1,000
250	2,500
500	5,000
1000	10,000

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Millimeter (mm)

Length

Exact conversion

Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Centimeter (cm)

Length

Exact conversion

Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

How to Convert Millimeter to Centimeter

To convert from Millimeter (mm) to Centimeter (cm), multiply the value by 0.1.

Formula: cm = mm × 0.1

Reverse: mm = cm × 10

Step-by-Step Example

Start with your value in Millimeter. For example: 5 mm
Multiply by the conversion factor: 5 x 0.1
The result is: 0.5 cm

About Millimeter

The millimeter equals one thousandth of a meter and is used for precise measurements in engineering and manufacturing.

Common uses: engineering, rainfall measurement, manufacturing.

About Centimeter

The centimeter equals one hundredth of a meter. It is commonly used for everyday measurements of length.

Common uses: body measurements, clothing, furniture.

Frequently Asked Questions

How many Centimeter are in 1 Millimeter?

There are exactly 0.1 Centimeter in 1 Millimeter. This means the conversion factor from Millimeter to Centimeter is 0.1.

What is the formula to convert Millimeter to Centimeter?

The formula to convert Millimeter to Centimeter is: cm = mm × 0.1. For example, to convert 10 Millimeter to Centimeter, you would multiply 10 by 0.1.

What is a Millimeter?