/convert/centimeters-to-millimeters/ Convert centimeters to millimeters instantly. Enter any value and get the result. Includes a conversion table and the exact formula. article Centimeters to Millimeters Converter — 247QuickTools ,{ "@context": "https://schema.org", "@type": "SpeakableSpecification", "cssSelector": [".tool-intro", ".info-gain-section"] }
📏 Length

Centimeters to Millimeters Converter

Convert centimeters to millimeters instantly. Enter any value and get the result. Includes a conversion table and the exact formula.

Quick answer: To convert centimeters to millimeters, multiply by 10. For example, 1 centimeters = 10 millimeters. Use the calculator below for any value.
centimeters to millimeters
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Common conversions
Centimeters Millimeters
Formula:

How to convert centimeters to millimeters

1

Enter your value

Type the number of centimeters you want to convert into the left box. The result in millimeters appears instantly in the right box. You can also type into the right box to convert in the other direction.

2

Use the swap button

Click the ⇄ Swap button to reverse the conversion — Millimeters to Centimeters. Your current value carries across so you don't have to re-enter anything.

3

About Centimeters and Millimeters

centimeters and millimeters are both units of length. Use this converter to switch between them instantly.

💡 Did you know?

1 cm = 10 mm. The centimetre prefix 'centi-' = 1/100 and 'milli-' = 1/1000. The millimetre is the standard unit for engineering tolerances — a precision-machined part specified to ±0.1 mm requires a tolerance of ±100 micrometres.

📊 Common conversions at a glance
Centimeters Millimeters
1 10
2 20
5 50
10 100
15 150
20 200
Reviewed for 2026. Centimeters ↔ Millimeters conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.