How to convert centimeters to inches
- Type the value in centimeters (cm) in the box above.
- The result in inches appears instantly, along with the same value in every other unit of length.
- Press ⇄ to convert the other way.
Formula
inches = centimeters ÷ 2.54 (1 cm = 0.393701 in). So 1 cm = 0.393701 in, and 30 cm = 11.811 in.
Centimetres to inches comes up when buying from US shops, reading screen and TV sizes, checking luggage limits (55 cm is about 21.7 in) and following knitting or sewing patterns. Because the inch is defined as exactly 2.54 cm, the conversion is exact: divide by 2.54. A quick mental shortcut is to multiply by 4 and divide by 10, which gives 0.4 in per cm and is within 2%.
cm to in conversion chart
| Centimeters | Inches |
|---|---|
| 1 cm | 0.393701 in |
| 2 cm | 0.787402 in |
| 5 cm | 1.9685 in |
| 10 cm | 3.93701 in |
| 15 cm | 5.90551 in |
| 20 cm | 7.87402 in |
| 25 cm | 9.84252 in |
| 30 cm | 11.811 in |
| 40 cm | 15.748 in |
| 50 cm | 19.685 in |
| 60 cm | 23.622 in |
| 100 cm | 39.3701 in |
FAQ
How many inches is 30 cm?
30 cm is 11.811 inches, just under one foot (12 in = 30.48 cm).
How do I convert cm to in?
Use inches = centimeters ÷ 2.54 (1 cm = 0.393701 in). Or type the value above and the converter does it for you.
How do I convert in back to cm?
Multiply by 2.54, or press the ⇄ button in the converter.