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Convert mm to cm, cm to mm

Convert mm to cm

mm
cm

Convert cm to mm

cm
mm

How to convert mm to cm: Use the conversion calculator titled "Convert mm to cm". Enter a value in the mm field and click on the "Calculate cm" button. Your answer will appear in the cm field.

How to convert cm to mm: Use the conversion calculator titled "Convert cm to mm". Enter a value in the cm field and click on the "Calculate mm" button. Your answer will appear in the mm field.

Conversion Formulas

Both millimeter (mm) and centimeter (cm) are units of length in the Metric System. So when you convert between these units, you are performing a conversion between two units within the Metric System.

Let's take a closer look at the conversion formulas so that you can do these conversions yourself either with a calculator or with an old-fashioned pencil and paper.

The formula to convert from mm to cm is:

cm = mm x 0.1

The formula to convert from cm to mm is:

mm = cm x 10

Conversion Examples

Next, let's look at some examples showing the work and calculations that are involved in converting between milimeters (mm) and centimeters (cm).

Millimeter to Centimeter Conversion Example

Task: Convert 120 millimeters to centimeters (show work)

Formula:
mm x 0.1 = cm

Calculations:
120 mm x 0.1 = 12 cm

Result:
120 mm is equal to 12 cm

Centimeter to Millimeter Conversion Example

Task: Convert 35 centimeters to millimeters (show work)

Formula:
cm x 10 = mm

Calculations:
35 cm x 10 = 350 mm

Result:
35 cm is equal to 350 mm

Conversion Tables

For quick reference purposes, below are conversion tables that you can use to convert from mm to cm, and cm to mm.

Millimeters to Centimeters Conversion Chart

millimeters (mm) centimeters (cm)
1 mm 0.1 cm
2 mm 0.2 cm
3 mm 0.3 cm
4 mm 0.4 cm
5 mm 0.5 cm
6 mm 0.6 cm
7 mm 0.7 cm
8 mm 0.8 cm
9 mm 0.9 cm
10 mm 1 cm
11 mm 1.1 cm
12 mm 1.2 cm
13 mm 1.3 cm
14 mm 1.4 cm
15 mm 1.5 cm
20 mm 2 cm
25 mm 2.5 cm
30 mm 3 cm
40 mm 4 cm
50 mm 5 cm
75 mm 7.5 cm
100 mm 10 cm
500 mm 50 cm
1000 mm 100 cm

Centimeters to Millimeters Conversion Chart

centimeters (cm) millimeters (mm)
1 cm 10 mm
2 cm 20 mm
3 cm 30 mm
4 cm 40 mm
5 cm 50 mm
6 cm 60 mm
7 cm 70 mm
8 cm 80 mm
9 cm 90 mm
10 cm 100 mm
11 cm 110 mm
12 cm 120 mm
13 cm 130 mm
14 cm 140 mm
15 cm 150 mm
20 cm 200 mm
25 cm 250 mm
30 cm 300 mm
40 cm 400 mm
50 cm 500 mm
75 cm 750 mm
100 cm 1000 mm
500 cm 5000 mm
1000 cm 10,000 mm

Conversion Definitions

The following is a list of definitions relating to conversions between millimeters and centimeters.

What is a millimeter (mm)?

A millimeter is a unit of length in the Metric System. The symbol for millimeter is mm. There are 1,000 millimeters in a meter. The International spelling is millimetre.

What is a centimeter (cm)?

A centimeter is a unit of length in the Metric System. The symbol for centimeter is cm. There are 100 centimeters in a meter. The International spelling is centimetre.

How many millimeters in a centimeter?

There are 10 millimeters in a centimeter.

How many centimeters in a millimeter?

There are 0.1 centimeters in a millimeter.

Understanding the Length Units

This table provides a summary of the Length units within their respective measurement systems.

Unit Symbol Measurement System Description
inches in or " US Customary Units (and Imperial)  
feet ft or ' US Customary Units (and Imperial) 1 foot = 12 inches
yards yd US Customary Units (and Imperial) 1 yard = 3 feet
miles mi US Customary Units (and Imperial) 1 mile = 1760 yards or 5280 feet
millimeter mm Metric System 1000 mm = 1 m
centimeter cm Metric System 100 cm = 1 m, 1 cm = 10 mm
decimeter dm Metric System 10 dm = 1 m, 1 dm = 10 cm
meter m Metric System 1 m = 1000 mm, 100 cm, 10 dm
kilometer km Metric System 1 km = 1000 m