Convert Millimeters to Centimeters
Convert Millimeters to Centimeters instantly. 1 Millimeter (mm) equals 0.1 Centimeters (cm).
Millimeters to Centimeters conversion table
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 1 mm | 0.1 cm |
| 2 mm | 0.2 cm |
| 3 mm | 0.3 cm |
| 5 mm | 0.5 cm |
| 10 mm | 1 cm |
| 20 mm | 2 cm |
| 50 mm | 5 cm |
| 100 mm | 10 cm |
| 500 mm | 50 cm |
| 1,000 mm | 100 cm |
1 Millimeter = 0.1 Centimeters · multiply Millimeters by 0.1
About converting Millimeters to Centimeters
Millimeters (mm) and Centimeters (cm) are both units of length, so converting between them is a single multiplication: multiply your Millimeters figure by 0.1. Ten Millimeters comes to 1 Centimeters, and a hundred works out at 10 Centimeters.
Rule of thumb: going from Millimeters to Centimeters divides, so the figure always shrinks — it takes about 10 Millimeters to make a single Centimeter. If your answer came out bigger, you have the conversion the wrong way round.
What is a Millimeter?
A millimeter is one thousandth of a meter, and it is where metric measurement starts getting genuinely precise. It is the working unit of engineering drawings, machine shops, rainfall figures and camera lenses — a "50 mm lens" and "12 mm of rain overnight" are both millimeter measurements. Technical drawings in most of the world default to millimeters precisely because it lets a draughtsman specify a whole component without ever writing a decimal point.
What is a Centimeter?
A centimeter is one hundredth of a meter. It is the everyday metric unit for body measurements, paper sizes, furniture and anything else you would reach for a ruler to check — small enough to be precise about a person’s height without resorting to decimals, large enough that you are not counting hundreds of them. Most of the world lists height in centimeters rather than feet and inches, so 180 cm is instantly readable as "about six foot" to a large part of the planet.
To put both in perspective: a credit card is about 0.76 millimeters thick, while a standard credit card is 8.56 centimeters wide.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Centimeters to Millimeters converter, or browse all Length converters.
Frequently asked questions
How many Centimeters are in one Millimeter?
There are 0.1 Centimeters in one Millimeter.
How do I convert Millimeters to Centimeters?
Multiply the number of Millimeters by 0.1. For example, 10 Millimeters = 1 Centimeters.
What is 100 Millimeters in Centimeters?
100 Millimeters is equal to 10 Centimeters.
How do I convert Centimeters to Millimeters?
Multiply the Centimeters value by 10 (or divide by 0.1).
Is this Millimeters to Centimeters conversion exact?
Yes, exactly. Both units are fixed against the same base by definition, and 1 Millimeter = 0.1 Centimeters is the complete value — nothing is rounded away.
What is a Millimeter?
A millimeter is one thousandth of a meter, and it is where metric measurement starts getting genuinely precise. It is the working unit of engineering drawings, machine shops, rainfall figures and camera lenses — a "50 mm lens" and "12 mm of rain overnight" are both millimeter measurements. Technical drawings in most of the world default to millimeters precisely because it lets a draughtsman specify a whole component without ever writing a decimal point.
What is a Centimeter?
A centimeter is one hundredth of a meter. It is the everyday metric unit for body measurements, paper sizes, furniture and anything else you would reach for a ruler to check — small enough to be precise about a person’s height without resorting to decimals, large enough that you are not counting hundreds of them. Most of the world lists height in centimeters rather than feet and inches, so 180 cm is instantly readable as "about six foot" to a large part of the planet.