Convert Centimeters to Millimeters

1 cm = 10 mm

1 cm = 10 mm

centimeters (cm) millimeters (mm)
0.5 5
1 10
2 20
5 50
10 100
25 250
50 500
100 1000
250 2500
500 5000
1000 10000

To convert centimeters to millimeters, multiply the value by the conversion factor:

1 cm = 10 mm

For example: 10 cm = 100 mm

The Conversion Formula

To convert centimeters to millimeters, multiply the value by the conversion factor: 1 cm = 10 mm. For a worked example, suppose you need to convert 25 cm to millimeters: 25 × 10 = 250 mm. To convert in the opposite direction, divide by 10, or equivalently multiply by 0.1.

About centimeters

The centimeter (cm) is a versatile unit in the metric system, representing one hundredth of a meter. It was the base unit of length in the now-deprecated CGS (centimeter-gram-second) system, which was widely used in science until the mid-20th century. Today, it remains the go-to unit for everyday measurements that are too small for meters but too big for millimeters, bridging the gap between human-scale and precision engineering. centimeters are commonly used in Human height measurements, Clothing and tailoring, Furniture dimensions, and Rainfall measurement, School supplies (rulers).

The diameter of a standard AAA battery is about 1 cm.

About millimeters

The millimeter (mm) is the standard unit for engineering and manufacturing precision. Defined as one thousandth of a meter, it allows for accurate specifications without resorting to fractions. In the late 19th century, the adoption of the millimeter in industrial design helped standardize interchangeable parts, a key driver of modern mass production. It is also the standard for reporting rainfall in meteorology. millimeters are commonly used in Engineering blueprints, Smartphone dimensions, Jewelry sizing, and Medical instruments, Meteorology (rainfall).

A standard credit card is 0.76 mm thick.

When Would You Convert centimeters to millimeters?

Converting between centimeters and millimeters is one of the most common length conversions. You might need this conversion when working with international specifications, following instructions written for a different measurement system, or comparing values across different standards. Having the conversion factor (1 cm = 10 mm) memorized or bookmarked can save time in professional and everyday contexts alike.