Convert inches to centimeters in one step. Type a value, see the answer and a few related units, and use the chart below for common values. Free, private, and runs entirely in your browser.
Multiply the number of inches by the conversion factor to get centimeters. The units are defined in terms of each other, so the conversion is exact. The calculator uses the full-precision factor, while the factor printed here is rounded.
| Inches (in) | Centimeters (cm) |
|---|---|
| 0.25 | 0.635 |
| 0.5 | 1.27 |
| 1 | 2.54 |
| 2 | 5.08 |
| 5 | 12.7 |
| 8.5 | 21.59 |
| 10 | 25.4 |
| 12 | 30.48 |
| 24 | 60.96 |
| 36 | 91.44 |
| 60 | 152.4 |
| 100 | 254 |
How many cm is 1 inch? Exactly 2.54 cm.
How do I convert inches to cm by hand? Multiply the number of inches by 2.54. For 10 inches, 10 × 2.54 = 25.4 cm.
Convert 10 inches to centimeters: 10 × 2.54 = 25.4 cm.
Is the inches to centimeters factor exact? Yes. The units are defined in terms of each other, so the factor has no uncertainty.
Can I convert centimeters back to inches? Yes. Use the converter in the opposite direction, which is linked below.
The inch was fixed at exactly 25.4 millimeters by the international yard and pound agreement of 1959, signed by the United States, the United Kingdom, Canada, Australia, New Zealand and South Africa. Before that, American and British inches differed by a tiny amount. Today the inch is defined in metric terms, so the conversion to centimeters is exact.
Use this converter for screen sizes, furniture, clothing measurements, picture frames and tool sizes quoted in inches. A 55-inch television has a 139.7 cm diagonal, and a 36-inch waist is 91.44 cm.
What is a quick estimate for inches to centimeters? Multiply or divide by the rounded factor, 2.54, then use the calculator for the exact value.
Does the converter work on a phone? Yes. It runs in your browser and updates when you press Calculate.