Inches to Centimeters Converter
Enter a value to instantly convert between length units.
1 Inch = 2.54 Centimeter
Key Formulas
Centimeter → Inch
in = cm × 0.393701Kilometer → Mile
mi = km × 0.621371Foot → Meter
m = ft × 0.3048Inch → Centimeter
cm = in × 2.54Formula
cm = in × 2.54Inches are standard in the US, UK, and Canada for measurements like screen diagonals and clothing. Centimeters are the global standard for precision work. European furniture stores list dimensions in centimeters, US stores in inches — when you're trying to fit a sofa or monitor bought online into a specific space, you need this quickly.
Source: NIST SP 811, Table B.8
Last reviewed: · see our methodology
Frequently Asked Questions
Real-World Examples
1 inch is the exact definition, 2.54 centimeters since 1959
1 in = 2.54 cm
A 27-inch monitor is 68.6 cm diagonally
27 in = 68.58 cm
A smartphone typically measures 5-6 inches or 13-15 cm diagonally
2 in = 5.08 cm
A standard 12-inch ruler is exactly 30.48 cm — handy to know when buying a replacement ruler abroad that lists its length in centimeters
12 in = 30.48 cm
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Further Reading
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How to Take Body Measurements for Accurate Clothing Sizes
Which body measurements clothing sizes are actually based on, how to take them accurately at home, and why your 'usual size' doesn't always travel between brands or countries.
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Shoe Size Conversion Guide: US, UK, EU, and Centimeters
Why shoe sizes don't convert with a simple formula, how US, UK, and EU sizing systems differ, and how to measure your foot to find your true size.