CM to MM Converter

Instantly calculate! Your online conversion tool always at hand to easily convert centimeters to millimeters. Perfect for everyday measurements, DIY projects, engineering, and professional use. Simply enter your value and get accurate results immediately.

How to Convert CM to MM

mm = cm × 10

1 cm = 10 millimeters
1 millimeter = 0.1 cm

Example: convert 15 cm to mm:
15 cm = 15 × 10 mm = 150 mm

CM to MM

Value:

Convert to:

From centimeters to millimeters

1 cm = 10 mm

Quick Conversion Table: CM to MM

CM	MM
0.1	1
0.2	2
0.3	3
0.4	4
0.5	5
0.6	6

CM	MM
0.7	7
0.8	8
0.9	9
1	10
1.5	15
2	20

CM	MM
2.5	25
5	50
10	100
20	200
50	500
100	1000

cm	mm	cm	mm	cm	mm	cm	mm

About the Units

Centimeter (cm)

A centimeter is a unit of length in the metric system, equal to one-hundredth of a meter (0.01 m). It is commonly used for everyday measurements such as body height, clothing sizes, and general dimensions. The metric system was introduced in France in the 1790s.

Millimeter (mm)

A millimeter is a unit of length in the metric system, equal to one-thousandth of a meter (0.001 m). It is commonly used for precise measurements in engineering, manufacturing, electronics, and applications where small distances need to be measured accurately.

Frequently Asked Questions

How many mm is 1 cm?

1 cm is equal to 10 millimeters.

How do I convert cm to mm?

To convert centimeters to millimeters, multiply the cm value by 10. For example, 5 cm = 5 × 10 = 50 mm.

What is the formula for cm to mm?

The formula is: millimeters = centimeters × 10.

How many cm is 1 mm?

1 millimeter equals 0.1 centimeters (or 1/10 of a centimeter).

What is 10 cm in mm?

10 cm equals 100 millimeters.

How to convert mm to cm?

To convert millimeters to centimeters, divide the mm value by 10. For example, 50 mm = 50 ÷ 10 = 5 cm.

Why are mm and cm both metric units?

Both millimeters and centimeters are part of the International System of Units (SI), based on the meter. The metric system uses prefixes like "milli" (1/1000) and "centi" (1/100) to denote fractions of the base unit.

What is 2.5 cm in mm?

2.5 cm equals 25 millimeters.

When should I use cm vs mm?

Use centimeters for general measurements (height, clothing sizes), and millimeters for precise measurements (engineering, manufacturing, electronics).

How many cm in a meter?

There are 100 centimeters in one meter.