Millimeters to Centimeters Converter (mm to cm)

Use this free online millimeter to centimeter converter to quickly convert mm to cm. Simply enter the value in millimeters, and the tool will instantly display the equivalent length in centimeters.

How to Convert Millimeters to Centimeters

Converting mm to cm is simple, since both units belong to the metric system. To convert a value from millimeters to centimeters, divide the number of millimeters by 10.

Formula: cm = mm ÷ 10

Example: Convert 120 mm to cm. 120 mm ÷ 10 = 12 cm So, 120 millimeters is equal to 12 centimeters.

You can also convert mm to cm by simply moving the decimal point one place to the left.

What is a Millimeter?

A millimeter (mm) is a unit of length in the metric system, equal to one-thousandth (1/1000) of a meter. It is the smallest unit typically marked on a standard ruler and is used where higher precision is needed, such as in engineering, manufacturing, and technical drawings.

What is a Centimeter?

A centimeter (cm) is a unit of length equal to one-hundredth (1/100) of a meter. It is commonly used to measure medium-length objects such as notebooks, phone screens, and everyday items, and is widely used outside the United States to measure height.

Millimeter to Centimeter Relationship

1 mm = 0.1 cm 1 cm = 10 mm

Since a meter contains 1000 millimeters and 100 centimeters, every millimeter naturally equals one-tenth of a centimeter.

Mm to Cm Conversion Table

Millimeters (mm)	Centimeters (cm)
1 mm	0.1 cm
2 mm	0.2 cm
5 mm	0.5 cm
10 mm	1 cm
20 mm	2 cm
50 mm	5 cm
100 mm	10 cm
1000 mm	100 cm

Solved Examples

Example 1: Convert 45 mm to cm. 45 ÷ 10 = 4.5 cm

Example 2: Convert 500 mm to cm. 500 ÷ 10 = 50 cm

Example 3: Which is greater, 8 cm or 65 mm? 8 cm = 80 mm, so 8 cm is greater than 65 mm.

Frequently Asked Questions