How to use CM to Inches
- Type a value in centimeters.
- The result in inches appears instantly.
- Type in the second box to convert the other way.
How to convert centimeters to inches
Multiply the value in centimeters by 0.393701. Formula: in = cm ÷ 2.54. Example: 10 cm × 0.393701 = 3.937 in.
Common centimeters to inches conversions
5 cm = 1.9685 in. 25 cm = 9.8425 in. 50 cm = 19.685 in. 100 cm = 39.3701 in.
Quick mental math
Quick estimate: multiply by 0.4. 50 cm ≈ 20 inches (exact: 19.7 in).
Where is cm to in conversion used?
Length conversions come up constantly when metric and imperial systems meet: checking your height for a visa or medical form, comparing screen and TV sizes, buying furniture or clothes from another country, reading product dimensions on international shopping sites, and following DIY or engineering drawings.
What are centimeters?
A centimeter is one hundredth of a meter. It is the everyday metric unit for height, clothing sizes and object dimensions in most countries.
What are inches?
An inch is exactly 2.54 centimeters by international agreement. It is used in the US and UK for screens, height and small dimensions.
Centimeters to inches conversion table
| Centimeters (cm) | Inches (in) |
|---|---|
| 1 | 0.393701 |
| 2 | 0.787402 |
| 3 | 1.1811 |
| 4 | 1.5748 |
| 5 | 1.9685 |
| 6 | 2.3622 |
| 7 | 2.7559 |
| 8 | 3.1496 |
| 9 | 3.5433 |
| 10 | 3.937 |
| 12 | 4.7244 |
| 15 | 5.9055 |
| 20 | 7.874 |
| 25 | 9.8425 |
| 30 | 11.811 |
| 50 | 19.685 |
| 75 | 29.5276 |
| 100 | 39.3701 |
Frequently asked questions
How many inches are in 1 centimeter?
1 centimeter = 0.393701 inches (1 cm = 0.393701 in).
How many centimeters are in 1 inch?
1 inch = 2.54 centimeters (1 in = 2.54 cm).
What is 10 cm in inches?
10 cm = 3.937 in.
What is 100 cm in inches?
100 cm = 39.3701 in.
Is the cm to in conversion exact?
Yes. Since 1959 the inch has been defined as exactly 2.54 cm, so every imperial–metric length factor (inch, foot, yard, mile) is exact. Results here are rounded only for display.
Last updated: · Free to use, no sign-up.