About the Inches to Centimeters Converter
Convert inches (in) to centimeters (cm) instantly. Includes the exact conversion factor, formula and a quick reference table.
Also known as: in to cm, Inches to Centimeters, convert Inches to Centimeters, in to cm, in to cm, inch to centimeter.
How to use this calculator
- Enter value in inches.
- 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
cm = in × 2.54
Worked example
Using the values pre-filled in the calculator above:
- Value in inches = 12 in
the calculator returns:
- Centimeters: 30.48 cm
- Nanometers: 304,800,000 nm
- Micrometers: 304,800 µm
- Millimeters: 304.8 mm
Working
12 in × 2.54 = 30.48 cm