How to convert inches to centimeters

Step-by-step explanation of how to convert inches to centimeters, with formulas, worked examples, and a free online calculator.

Inches and centimeters measure the same thing — small lengths — in two different systems. The inch is part of the Imperial system used in the United States, while the centimeter is part of the metric system used everywhere else. One inch equals exactly 2.54 centimeters, so to convert inches to centimeters, multiply by 2.54. For example, 12 inches × 2.54 = 30.48 cm (which is exactly 1 foot). To go the other way, divide cm by 2.54. Common uses: screen sizes (TVs, monitors, phones), tire diameters, and paper sizes.