How to convert centimeters to inches
- Type the value you want to convert.
- The result appears instantly. Use Swap units to reverse the direction.
- Choose other units from the lists if you need a different conversion.
Formula
in = cm × 0.3937 and cm = in × 2.54.
Examples
10 cm = 3.937 in. 20 cm = 7.874 in. 50 cm = 19.685 in.
Quick reference table
| cm | in |
|---|---|
| 1 cm | 0.3937 in |
| 2.54 cm | 1 in |
| 5 cm | 1.9685 in |
| 10 cm | 3.937 in |
| 15 cm | 5.9055 in |
| 20 cm | 7.874 in |
| 30 cm | 11.811 in |
| 50 cm | 19.685 in |
| 100 cm | 39.3701 in |
| 180 cm | 70.8661 in |
And the other way: in to cm
| in | cm |
|---|---|
| 1 in | 2.54 cm |
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 25 in | 63.5 cm |
| 50 in | 127 cm |
| 100 in | 254 cm |
When you need this conversion
Screen sizes, clothing, furniture, photo prints and packaging often list one size in centimeters and another in inches. There are exactly 2.54 centimeters in an inch, so the conversion is exact.
Frequently asked questions
How many in is 1 cm?
1 cm equals 0.3937 in. In the other direction, 1 in equals 2.54 cm.
How many inches is 180 cm?
180 cm is 70.8661 in.
What is the formula to convert centimeters to inches?
Multiply the number of cm by 0.3937 to get in. To go back, multiply in by 2.54.
Is this converter free and private?
Yes. It is free, needs no sign-up and runs in your browser, so the numbers you enter are not sent anywhere.
More free converters
Inches to Centimeters ConverterConvert inches to centimeters instantly.Feet to Meters ConverterConvert feet to meters instantly.Meters to Feet ConverterConvert meters to feet instantly.
Last updated: November 6, 2026