CM to Inches Converter
Convert centimeter to inch instantly. 1 cm = 0.3937007874 in, worked steps and a full reference table.
How to use it
- Type the value in centimeter — the result updates as you type.
- Use Swap to flip the direction, or change either dropdown to convert between any two units.
- Click the result to copy it. The URL updates too, so you can bookmark or share the exact conversion.
Examples
| 1 cm | 0.3937007874 in |
| 5 cm | 1.968503937 in |
| 10 cm | 3.937007874 in |
| 100 cm | 39.37007874 in |
One centimeter equals 0.39370079 inches (in). To convert centimeters to inches, multiply by 0.39370079; to go back the other way, multiply by 2.54 instead.
The converter above does it as you type and shows the working underneath, so you can check the arithmetic rather than take the number on trust.
What centimeters and inches actually measure
Centimeter (cm) — A centimetre is a hundredth of a metre. Body measurements, clothing sizes, paper and furniture dimensions across most of the world.
Inch (in) — An inch is exactly 25.4 millimetres by international agreement since 1959. Screen sizes, pipe and tyre diameters, and construction in the US.
CM to Inches conversion table
The most common values, worked out in advance. Anything not listed can be typed straight into the converter.
| cm | in |
|---|---|
| 1 cm | 0.39370079 in |
| 2 cm | 0.78740157 in |
| 5 cm | 1.9685039 in |
| 10 cm | 3.9370079 in |
| 25 cm | 9.8425197 in |
| 50 cm | 19.685039 in |
| 100 cm | 39.370079 in |
How to convert centimeters to inches by hand
Multiply the number of centimeters by 0.39370079.
For example, 25 cm × 0.39370079 = 9.8425197 in.
Going the other way, divide by 0.39370079 — or multiply by 2.54, which is the same thing and easier to do in your head.
Everything runs in your browser
There is no server involved in the calculation. The numbers you type never leave your device, nothing is logged, and the page keeps working with no connection once it has loaded. That is not a marketing line — it is simply how the tool is built, because a calculation like this has no reason to touch a network.
Questions people ask
How many in are in 1 cm?
1 cm equals exactly 0.3937007874 in. Multiply any value in centimeter by 0.3937007874 to get inch.
Is anything uploaded to a server?
No. The whole calculation happens in your browser. Nothing is sent anywhere, and the page keeps working offline once loaded.
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Last updated 18 August 2026