Centimetres to millimetres
One centimetre equals ten millimetres.
Centimetres (cm)
→
10 mm
1 cm = 10 mm.
Formula: Millimetres = Centimetres × 10
*This tool is for informational purposes only. Verify measurements with official records for legal transactions.
Understanding these units
Centimetres
Centimetres are a convenient everyday metric step.
Millimetres
Millimetres add precision for gaps, glass thickness, and tolerances.
Common questions
Multiply your value in centimetres by the conversion factor (see the formula on this page), or use the calculator above.
Yes for everyday engineering: inches are defined as exactly 2.54 cm, and the foot–metre relation follows from that definition.
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