inches to centimeters Converter
Type a value in inches and get the answer in centimeters instantly — or convert the other way. The conversion uses the exact relationship 1 inches = 2.54 centimeters, the same formula used in textbooks and engineering references.
Inches are used in the US for height, screens and construction; centimeters are the metric standard everywhere else. One inch is officially exactly 2.54 centimeters, so converting is a simple multiplication.
How to use
- Type your value into the inches box — the centimeters result updates as you type.
- To go the other direction, type into the centimeters box instead and read the inches result.
- Copy the result with one tap, or scan the reference table below for common values.
Frequently asked questions
How do you convert inches to centimeters?
Multiply the number of inches by 2.54. For example, 10 inches = 25.4 centimeters. The converter above does this for you and shows more decimal places than you will ever need.
How many centimeters are in one inches?
Exactly 2.54 centimeters. This is a fixed definition, not an approximation, so the conversion is exact at any scale.
Is this converter accurate for professional use?
Yes — it uses full double-precision arithmetic and the official inches-to-centimeters factor, so results are reliable for schoolwork, cooking, fitness, travel and technical work.
Can I convert centimeters back to inches?
Yes. The converter is two-way: just type in the second box and the first box updates instantly with the reverse conversion.