Millimetres to Centimetres

Convert mm to cm instantly — formula, worked examples and a conversion table of common values.

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About the Millimetres to Centimetres

Convert millimetres (mm) to centimetres (cm). Enter a value on either side and the other updates instantly — nothing is sent to a server.

One millimetre equals 0.1 cm. The table below lists the values people look up most often, and each one links to a page with the worked calculation.

cm = mm ÷ 10

How many centimetres are in 1 millimetre?

1 millimetre = 0.1 cm.

What is 10 mm in centimetres?

10 mm = 1 cm.

What is 100 mm in centimetres?

100 mm = 10 cm.

How do I convert millimetres to centimetres?

Use the formula cm = mm ÷ 10. Or type any value into the converter above — it works in both directions.