How to convert centimetres to inches
One inch is exactly 2.54 centimetres. Therefore, one centimetre is approximately 0.3937007874 inches.
inches = centimetres ÷ 2.54
Reverse: centimetres = inches × 2.54
For example, 1 cm = 0.3937 in.
CM to Inches conversion chart
Use these common reference values or the interactive calculator above for any number.
| Centimetres (cm) | Inches (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 |
| 30 cm | 11.811 in |
| 50 cm | 19.685 in |
| 100 cm | 39.3701 in |
When is this conversion useful?
Centimetres are used widely for clothing sizes, product dimensions and measurements on the metric system. Inches are common in screen sizes and building dimensions, especially in the United States.
If you are comparing furniture or monitor dimensions, make sure both figures refer to the same measurement (such as width or diagonal), rather than assuming the unit is the only difference.
Frequently asked questions
How many inches is 1 cm?
1 cm is approximately 0.3937 inches.
How do I convert inches back to cm?
Multiply inches by 2.54. For example, 10 inches is exactly 25.4 cm.