About the Centimeters to Inches Converter
Convert centimeters (cm) to inches (in) instantly. Includes the exact conversion factor, formula and a quick reference table.
Also known as: cm to in, Centimeters to Inches, convert Centimeters to Inches, cm to in, cm to in, centimeters to inches.
How to use this calculator
- Enter value in centimeters.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Open “Step-by-step” to see how the answer was worked out.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
in = cm × 0.3937007874
Worked example
Using the values pre-filled in the calculator above:
- Value in centimeters = 30 cm
the calculator returns:
- Inches: 11.811024 in
- Nanometers: 300,000,000 nm
- Micrometers: 300,000 µm
- Millimeters: 300 mm
Working
30 cm × 0.3937007874 = 11.81102362 in