Convert Inch to Centimeter
Convert Inch to Centimeter instantly. 1 in = 2.54 cm. Formula, worked examples and a quick reference table.
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One inch equals 2.54 centimeters. To convert any number of inchs to centimeters, multiply by 2.54.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Inch to Centimeter formula
To go the other way, use inch = centimeter ÷ 2.54.
About these units
The inch has been defined as exactly 25.4 millimetres since the 1959 international yard and pound agreement, which finally reconciled slightly different British and American definitions.
Inch to Centimeter conversion table
| Inch | Centimeter |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 3 in | 7.62 cm |
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 20 in | 50.8 cm |
| 25 in | 63.5 cm |
| 50 in | 127 cm |
| 100 in | 254 cm |
| 250 in | 635 cm |
| 500 in | 1,270 cm |
| 1,000 in | 2,540 cm |
Frequently asked questions
How many centimeters are in a inch? +
There are 2.54 centimeters in one inch.
What is 10 in in cm? +
10 in equals 25.4 cm. Multiply 10 by 2.54.
How do I convert centimeter back to inch? +
Use inch = centimeter ÷ 2.54. The converter above handles both directions, or see our dedicated Centimeter to Inch page.