How to Convert cm to mm: Complete Guide

Converting from cm to mm is a common task in construction, travel planning, sports measurements, and everyday shopping. Whether you need a quick answer or want to understand the math behind the conversion, this guide covers everything you need.

Quick Answer

**1 cm = 10 mm**. To convert any value from cm to mm, multiply by 10.

The Conversion Formula

The formula is straightforward: **mm = cm × 10**. For the reverse conversion, divide by 10 instead: **cm = mm ÷ 10**.

Common Conversion Table

Here are the most commonly needed conversions: - 0.1 cm = 1 mm - 0.5 cm = 5 mm - 1 cm = 10 mm - 2 cm = 20 mm - 3 cm = 30 mm - 5 cm = 50 mm - 10 cm = 100 mm - 15 cm = 150 mm - 20 cm = 200 mm - 25 cm = 250 mm - 50 cm = 500 mm - 100 cm = 1000 mm - 250 cm = 2500 mm - 500 cm = 5000 mm - 1000 cm = 10000 mm

When You Need This Conversion

This conversion is commonly needed in construction, travel planning, sports measurements, and everyday shopping. Understanding the relationship between cm and mm helps you work efficiently across different measurement systems and standards.

Tips for Quick Conversions

Since 1 cm equals 10 mm, you can estimate by multiplying by roughly 10. For precise results, use our free converter which handles all the math instantly.

Use Our Free Converter

Skip the manual math and use our free cm to mm converter for instant, accurate results. It includes a conversion table, formula explanation, and related conversions — all optimized for mobile and desktop.