inches to cm Converter
1 in = 2.54 cm. Enter a value. The result updates immediately.
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Accuracy and rounding
Use the decimal result for specifications. For tape measures, round only after you know the tolerance you need.
Inches and cm 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 cm and round only at the final step.
How to convert inches to cm
- Enter the value in inches.
- Select inches as the source unit.
- Select cm as the target unit.
- Read or copy the result.
inches to cm chart
| inches | cm |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 25 in | 63.5 cm |
| 50 in | 127 cm |
| 100 in | 254 cm |
Formula
cm = in x 2.54
Example: 1 in = 2.54 cm.
Source
SI meter definitions and exact international inch, foot, yard, and mile relationships.
Common questions
How do I convert inches to cm?
Enter the inches value in the converter, or multiply by the factor shown in the formula. 1 in = 2.54 cm.
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.