Convert Millimeter (mm) to Centimeter (cm) instantly. Enter any value and get the result immediately.
mm → cm Converter
| Millimeter (mm) | Centimeter (cm) |
|---|---|
| 0.1 mm | 0.01 cm |
| 0.5 mm | 0.05 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 |
| 200 mm | 20 cm |
| 500 mm | 50 cm |
| 1000 mm | 100 cm |
| 5000 mm | 500 cm |
| 10000 mm | 1000 cm |
Converting millimeters to centimeters is simple — divide the millimeter value by 10. Use the converter above for instant results, or follow the formula and examples below.
Step-by-step example — Convert 45 mm to cm:
Step-by-step example — Convert 250 mm (standard paper width) to cm:
Millimeter (mm) is one of the smallest commonly used units of length in the metric system. One millimeter equals one-thousandth of a meter (0.001 m). It is widely used in fields that require fine precision — such as engineering tolerances, screw thread sizes, medical device measurements, and rainfall data. The thickness of a credit card, for instance, is approximately 0.76 mm.
Centimeter (cm) is a metric unit equal to 10 millimeters or one-hundredth of a meter (0.01 m). The prefix "centi-" means one-hundredth. It is commonly used for measuring everyday objects like clothing sizes, screen dimensions, height of children, and furniture. Most rulers and measuring tapes display centimeters as the primary scale in metric countries.
| Millimeters (mm) | Centimeters (cm) | Common Reference |
|---|---|---|
| 1 mm | 0.1 cm | Thickness of a credit card |
| 5 mm | 0.5 cm | Width of a pencil |
| 10 mm | 1 cm | 1 centimeter exactly |
| 25 mm | 2.5 cm | Standard coat button diameter |
| 50 mm | 5 cm | Width of a large postage stamp |
| 100 mm | 10 cm | Width of a smartphone screen |
| 210 mm | 21 cm | A5 paper width |
| 297 mm | 29.7 cm | A4 paper height |
| 500 mm | 50 cm | Half a meter ruler |
There are exactly 10 millimeters in one centimeter. So 1 cm = 10 mm.
The formula is: cm = mm ÷ 10. Simply divide any millimeter value by 10, or move the decimal point one place to the left.
1 millimeter = 0.1 cm. It takes 10 millimeters to make one full centimeter.
50 mm = 5 cm. This is roughly the width of a large postage stamp.
A millimeter is smaller. One centimeter equals 10 millimeters — so cm is 10 times larger than a millimeter.
A4 paper is 210 mm × 297 mm, which equals 21 cm × 29.7 cm. This is the most widely used paper size internationally.
Centimeters are easier to read and communicate for mid-range measurements. "The wound is 2.5 cm" is clearer than saying 25 millimeters, especially in everyday or medical contexts.