Inches to Centimeters Converter
Length conversion workspace
Enter a decimal, fraction or quick calculation — for example 12.5, 3/8 or (12*4)+6.5.
Batch conversionconvert up to 100 values at once
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Compare all length units
One input, every supported equivalent. Select any row as the main target.
| Unit | Equivalent | Target action |
|---|---|---|
| Meters m | 0.03 | |
| Feet ft | 0.08 | |
| Centimeters cm | 2.54 | TargetSelected |
| Millimeters mm | 25.4 | |
| Inches in | 1 | SourceSource |
| Yards yd | 0.03 | |
| Kilometers km | 2.54E-5 | |
| Miles mi | 1.58E-5 | |
| Nautical Miles nmi | 1.37E-5 |
Use this inch-to-centimeter converter for screen sizes, furniture, clothing measurements, product dimensions and everyday length checks.
Curated referenceFormula
centimeters = inches × 2.54
Calculations use the central unit catalog and preserve precision until the result is formatted.
Reference conversions
Fixed reference values use en-US formatting and up to 12 significant digits.
| Input | From | To | Result |
|---|---|---|---|
| 1 | Inches | Centimeters | 2.54 |
| 2 | Inches | Centimeters | 5.08 |
| 5 | Inches | Centimeters | 12.7 |
| 10 | Inches | Centimeters | 25.4 |
| 12 | Inches | Centimeters | 30.48 |
| 20 | Inches | Centimeters | 50.8 |
Related length conversions
Curated references with worked examples, formulas and the full interactive converter.
Frequently asked questions
How do I convert inches to centimeters?
Use centimeters = inches × 2.54. Enter a value in the calculator to keep full numeric precision until the result is formatted.
What is 1 in in cm?
1 in equals 2.54 cm.
Are the displayed results rounded?
The conversion uses the sourced catalog definitions and retains full JavaScript number precision until display formatting is applied.
Accuracy & transparency
Sources & methodology
Calculations keep full numeric precision until display formatting. These references describe the definitions, variants or factors used; links do not imply affiliation.
SI definitions and published coefficients for selected non-SI units.
Reference factors and named variants for commonly used units, including US liquid cooking measures and British stone.
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