Length Converter

Convert metric, imperial, navigation, and scientific length units with live results, accurate formulas, and reference tables.

Length conversion

Calculator

Results update instantly. Use Calculate to confirm the current conversion.

Decimals and negative values are supported.

Result

2.54 cm

1 in ≈ 2.54 cm

Live result is ready.

Open a focused converter for a commonly searched length conversion.

Conversion table

Common inches to centimeters values, generated from the selected units.

inches (in)centimeters (cm)
1 inch2.54 centimeters
5 inches12.7 centimeters
10 inches25.4 centimeters
20 inches50.8 centimeters
50 inches127 centimeters
100 inches254 centimeters

Formula

Multiply the value in inches by 2.54 to get centimeters.

cm = in × 2.54

Example

Convert 1 inch:

1 in2.54 cm

1 inch is approximately 2.54 centimeters.

Unit information

Concise reference information for the selected source and target units.

Inch (in)

Imperial
1 in = 0.0254 m
Definition
One international inch equals exactly 25.4 millimeters.
Usage
Common in the United States and for screens, hardware, and construction materials.

Centimeter (cm)

Metric
1 cm = 0.01 m
Definition
One centimeter is one-hundredth of a meter.
Usage
Common for body measurements, household objects, maps, and schoolwork.

Frequently asked questions

Which length units does this converter support?

The converter supports 14 units: millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, nautical miles, micrometers, nanometers, light years, astronomical units, and parsecs.

How does the length converter calculate results?

Each value is converted to meters as a shared base unit, then converted from meters to the selected target unit.

Can the converter handle decimals, negative values, and zero?

Yes. The input accepts integers, decimals, negative values, and zero, and updates the result immediately.