Centimeters to Inches Converter
1 centimeter (cm) = 0.393701 inches. Since 1 inch = 2.54 cm exactly, divide cm by 2.54 to convert.
Inverse conversion
1 inch (in) = exactly 2.54 centimeters (cm) — the international standard since 1959. 12 inches = 30.48 cm.
Formula
Formula
inches = cm × 0.393701
Worked example
To convert 30 cm to inches, multiply 30 by 0.393701. Result: 11.811 inches.
Quick reference table
| cm | in |
|---|---|
| 1 | 0.393701 |
| 5 | 1.968504 |
| 10 | 3.937008 |
| 15 | 5.905512 |
| 20 | 7.874016 |
| 30 | 11.811024 |
| 50 | 19.685039 |
| 100 | 39.370079 |
Unit definitions
Centimeter (cm)
The centimeter (cm) is one hundredth of a meter in the metric system.
Inch (in)
The inch (in) is a unit of length in the imperial and US customary systems, equal to exactly 2.54 cm.
Common use cases
- Height measurement
- Screen and display size
- Clothing and fabric