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cm to Inches Converter
Convert centimetres to inches or inches to centimetres using the exact international inch definition.
How to use this tool
Convert a finite length value between centimetres and international inches.
Transparent method
Formula and method
Inches = centimetres ÷ 2.54. Centimetres = inches × 2.54.
Example
25.4 centimetres ÷ 2.54 = 10 inches.
Assumptions and limits
- One international inch equals exactly 2.54 centimetres.
- Results show up to six decimal places.
Sources
Frequently asked questions
How many centimetres are in one inch?
One international inch is exactly 2.54 centimetres.
Can I convert a negative length?
The calculation supports it mathematically, although a negative physical length may not be meaningful for your use case.
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