Inches to Centimeters Calculator
Convert inches to centimeters and back. Live update as you type. Quick reference table for the most common sizes.
Convert
Formula: 1 inch = 2.54 cm exactly. Multiply inches by 2.54 to get centimeters; divide centimeters by 2.54 to get inches.
Inches to centimeters formula
Inches to Centimeters
Variables
Centimeters-Result in centimeters
Inches-Input value in inches
Length Conversion Table
| Centimeters | Inches | Feet |
|---|---|---|
| 1 cm | 0.39 | 0.03 |
| 2 cm | 0.79 | 0.07 |
| 3 cm | 1.18 | 0.1 |
| 4 cm | 1.57 | 0.13 |
| 5 cm | 1.97 | 0.16 |
| 6 cm | 2.36 | 0.2 |
| 9 cm | 3.54 | 0.3 |
| 12 cm | 4.72 | 0.39 |
| 18 cm | 7.09 | 0.59 |
| 24 cm | 9.45 | 0.79 |
| 36 cm | 14.17 | 1.18 |
| 48 cm | 18.9 | 1.57 |
| 60 cm | 23.62 | 1.97 |
| 72 cm | 28.35 | 2.36 |
Frequently Asked Questions about the Inches to Centimeters Calculator
How many centimeters are in an inch?
Exactly 2.54 centimeters. The international inch was standardized to this value in 1959 and applies in the US, UK, Canada, and most other English-speaking countries.
What is 1 inch in cm?
1 inch equals 2.54 cm. That is 25.4 millimeters or 0.0254 meters.
How do I convert inches to cm without a calculator?
Multiply the number of inches by 2.54. For a quick mental estimate, multiply by 2.5 and add 2 percent. A 12 inch ruler is roughly 30 cm.
How do I convert cm to inches?
Divide centimeters by 2.54. For a quick estimate, divide by 2.5 and subtract about 2 percent. A 100 cm length is roughly 39.4 inches.
Is an inch the same in the US, UK, and Canada?
Yes. Since 1959 all major English-speaking countries use the international inch of exactly 2.54 cm. The older US Survey inch was slightly different but is no longer used outside of legacy surveying contexts.
What is 5 feet 9 inches in cm?
5 feet 9 inches equals 69 inches, which equals 175.26 cm. To convert any height, multiply the total inches by 2.54.
Why use the metric system at all?
The metric system uses powers of ten, which makes arithmetic much easier. It is the official unit system in every country except the US, Liberia, and Myanmar.