cm to inches Converter
1 cm = 0.3937 in. Enter a value. The result updates immediately.
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Accuracy and rounding
For product dimensions, rulers, and screen specs. Exact: 1 in = 2.54 cm.
Cm and inches are tied back to the SI meter through fixed definitions, so the underlying conversion factor is stable.
For cutting, fitting, drawings, and product specs, keep extra decimals in inches and round only at the final step.
How to convert cm to inches
- Enter the value in cm.
- Select cm as the source unit.
- Select inches as the target unit.
- Read or copy the result.
cm to inches chart
| cm | inches |
|---|---|
| 1 cm | 0.3937 in |
| 2 cm | 0.7874 in |
| 5 cm | 1.9685 in |
| 10 cm | 3.937 in |
| 25 cm | 9.8425 in |
| 50 cm | 19.685 in |
| 100 cm | 39.3701 in |
Formula
in = cm x 0.393700787402
Example: 1 cm = 0.3937 in.
Source
SI meter definitions and exact international inch, foot, yard, and mile relationships.
Common questions
How do I convert cm to inches?
Enter the cm value in the converter, or multiply by the factor shown in the formula. 1 cm = 0.3937 in.
What should I watch out for?
Round only after converting if the measurement is used for cutting, fitting, or specifications.
Where does this length conversion come from?
SI meter definitions and exact international inch, foot, yard, and mile relationships. ConverterBase uses stable definitions and fixed conversion factors, not live or rounded market data.