How do I convert millimeters to centimeters?

Divide the number of millimeters by 10. For example, 10 mm equals 1 cm, and 250 mm equals 25 cm.

How many millimeters are in one centimeter?

There are exactly 10 millimeters in one centimeter (1 cm = 10 mm).

Is anything uploaded?

No — every conversion runs locally in your browser and nothing is sent to any server.

Millimeters to Centimeters Converter

This free length converter changes millimeters (mm) into centimeters (cm) and back again. The relationship is exact: 1 cm = 10 mm, so 250 mm equals 25 cm.

Type a value in either field — the result updates in real time. The reference table below shows common conversion values at a glance. All calculations run entirely in your browser with no data sent to any server.

Millimeters (mm)	Centimeters (cm)
10 mm	1 cm
50 mm	5 cm
100 mm	10 cm
250 mm	25 cm