**How many mm in a cm**: Centimeter to Millimeter conversion is a basic conversion we used in our daily life. millimeter is a smaller unit of length as compared to a centimeter centimeter is bigger than a millimeter by a factor of 10.

**1 cm = 10 mm** or **1 mm = 1/10 cm**

## Centimeter

Centimeter is a unit in the metric system which is used to measure length. It is comparable to one-hundredth of a meter, **centi** being the SI prefix for a factor of 1/100. In the ongoing expostulated CGS (centimeter-gram-second) arrangement of units, the centimeter was viewed as the base unit of length. In the decimal standard, **“centi” is the prefix for 10 ^{-2}. 1 centimeter can also be written as 1 cm.**

## Millimeter

Millimeter is a unit in the metric system which is used to measure the length. It is also a prefix to the meter and one-thousandth part of a meter. The millimeter is a multiple of the meter, which is the SI base unit for length. Millimeters can be written to mm. In the decimal standard, **“milli” is the prefix for 10 ^{-3}. 1 millimeter can also be written as 1 mm.**

## How to Convert the Centimeter to Millimeter?

Process to convert the centimeter to millimeter can be understood by the steps given below:

**Step 1:** The number in centimeters is taken.**Step 2:** Multiply the given number by a factor of 10**Step 3:** The resultant answer is in millimeters.

Thus, the required conversion is achieved.

**Example: What is 3 cm in mm?**

**Solution:**

As we know 1 cm = 10 mm

So, 3 cm = 3 × 10 mm

= 30 mm

Thus, 3 cm is equal to 30 mm