cm to inches converter
1 cm = 0.393701 in; 1 in = 2.54 cm (exact). To convert cm to inches, divide by 2.54.
Conversion formula
in = cm / 2.54
Conversion table
| 1 cm | 0.393701 in |
|---|---|
| 2 cm | 0.787402 in |
| 3 cm | 1.1811 in |
| 4 cm | 1.5748 in |
| 5 cm | 1.9685 in |
| 6 cm | 2.3622 in |
| 7 cm | 2.75591 in |
| 8 cm | 3.14961 in |
| 9 cm | 3.54331 in |
| 10 cm | 3.93701 in |
| 15 cm | 5.90551 in |
| 20 cm | 7.87402 in |
| 25 cm | 9.84252 in |
| 50 cm | 19.685 in |
| 100 cm | 39.3701 in |
| 1000 cm | 393.701 in |
Reverse conversion table
| 1 in | 2.54 cm |
|---|---|
| 2 in | 5.08 cm |
| 3 in | 7.62 cm |
| 4 in | 10.16 cm |
| 5 in | 12.7 cm |
| 6 in | 15.24 cm |
| 7 in | 17.78 cm |
| 8 in | 20.32 cm |
| 9 in | 22.86 cm |
| 10 in | 25.4 cm |
| 15 in | 38.1 cm |
| 20 in | 50.8 cm |
| 25 in | 63.5 cm |
| 50 in | 127 cm |
| 100 in | 254 cm |
| 1000 in | 2540 cm |
Key facts
| 1 centimetre | 0.393701 in |
|---|---|
| 1 inch | 2.54 cm (exact) |
| Formula | in = cm / 2.54 |
| 10 cm | 3.93701 in |
Frequently asked questions
How many inches is 1 cm?
1 cm equals 0.393701 inches. Divide any centimetre value by 2.54 to get inches.
Is the inch exactly 2.54 cm?
Yes. Since 1959 the international inch is defined as exactly 2.54 cm, so the conversion is exact.
How do I convert cm to inches?
Divide the centimetre value by 2.54. For example, 30 cm / 2.54 = 11.811 in.
Reverse conversion
Printable A4 conversion cheat sheet — see the Downloads page