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.
Result
1 in ≈ 2.54 cm
Live result is ready.
Popular length conversions
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 inch | 2.54 centimeters |
| 5 inches | 12.7 centimeters |
| 10 inches | 25.4 centimeters |
| 20 inches | 50.8 centimeters |
| 50 inches | 127 centimeters |
| 100 inches | 254 centimeters |
Formula
Multiply the value in inches by 2.54 to get centimeters.
cm = in × 2.54Example
Convert 1 inch:
1 in ≈ 2.54 cm1 inch is approximately 2.54 centimeters.
Unit information
Concise reference information for the selected source and target units.
Inch (in)
Imperial- 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- 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.