CM to Inches Converter
Convert centimeters to inches as you type, shown as a decimal and broken down into feet and inches.
Convert centimeters to inches
Type a length and the equivalent in inches updates as you go.
Decimals are fine, try 2.54 for exactly one inch.
Common conversions
| Centimeters (cm) | Inches |
|---|---|
| 1 | 0.3937007874 |
| 2.54 | 1 |
| 10 | 3.937007874 |
| 30 | 11.81102362 |
| 50 | 19.68503937 |
| 100 | 39.37007874 |
| 200 | 78.74015748 |
1 in is 2.54 cm, so 1 cm = 0.3937007874 in.
Frequently Asked Questions
One centimeter is 0.3937007874 inches. So 10 cm is 3.937007874 inches and 100 cm is 39.37007874 inches.
Multiply the number of centimeters by 0.3937007874. So 25 cm becomes 25 × 0.3937007874 = 9.842519685 inches.
Because that is the international agreement: since 1959 an inch has been defined as exactly 2.54 centimeters, and both units are derived from the same standard. It's an exact definition rather than a measured approximation, which is why this converter gives you exactly 1 inch for 2.54 cm.
Yes, decimals are expected. Enter 2.54 for exactly one inch, or 33.02 for 13 inches. Results are shown to ten decimal places, which is the full precision of the conversion itself, then rounded to the few digits your measurement is actually good to.
No. The conversion happens in your browser as you type, so nothing is uploaded or logged.