Inches to CM Converter
Convert inches to centimeters the easy way: every inch is exactly 2.54 cm. Enter a measurement and get the metric result at once.
How to convert inches to cm
- Enter a value in inches in the box above.
- Read the centimeter result immediately — it recalculates on every keystroke.
- Use the dropdowns to convert to millimeters, meters or feet instead.
The formula
Centimeters are found by multiplying inches by 2.54:
centimeters = inches × 2.54
To reverse it, divide centimeters by 2.54 to get back to inches.
Common inches to cm values
| Inches | Centimeters |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 6 in | 15.24 cm |
| 12 in | 30.48 cm |
| 24 in | 60.96 cm |
| 36 in | 91.44 cm |
Related tools
- CM to Inches converter — go the other way.
- Feet to Meters converter — for larger lengths.
Frequently asked questions
- How do I convert inches to centimeters?
- Multiply the number of inches by 2.54. For example, 5 inches × 2.54 = 12.7 cm. The tool above does it live as you type.
- How many centimeters are in an inch?
- Exactly 2.54 centimeters. This has been the official definition of the inch since 1959, so it is a precise figure, not a rounded one.
- What is 12 inches in cm?
- 12 inches (one foot) is exactly 30.48 cm, since 12 × 2.54 = 30.48.
- How do I convert a TV or screen size to centimeters?
- Screen sizes quote the diagonal in inches. Multiply that diagonal by 2.54 — for example a 55-inch TV is 55 × 2.54 = 139.7 cm across the diagonal.
- Why does the US still use inches?
- The United States kept imperial units for everyday use while most of the world moved to metric. Converting to centimeters makes measurements portable between the two systems.
- Is anything uploaded when I convert?
- No. Everything happens locally in your browser, so the numbers you enter never leave your device.