Centimeters to inches (cm to in)
Convert centimeters to inches. For length, 1 cm equals 0.3937007874 in.
Converter
cm to in conversion table
| Centimeters | Inches |
|---|---|
| 1 cm | 0.39370079 in |
| 2 cm | 0.78740157 in |
| 5 cm | 1.9685039 in |
| 10 cm | 3.9370079 in |
| 25 cm | 9.8425197 in |
| 50 cm | 19.685039 in |
| 100 cm | 39.370079 in |
| 1000 cm | 393.70079 in |
Formula
in = cm × 0.3937007874
Worked example
25 cm × 0.3937007874 = 9.842519685 in
Popular conversion examples
Choose an example to open this converter with the value filled in. These are useful examples, not a claim about search rankings.
- 1 cm to in = 0.393701 in
- 5 cm to in = 1.9685 in
- 100 cm to in = 39.3701 in
- 18 cm to in = 7.08661 in
- 7.5 in to cm = 19.05 cm
- 15 in to cm = 38.1 cm
About centimeters and inches
Centimeter (cm)
A centimeter is one hundredth of a meter. It is common for everyday lengths such as height, clothing sizes and furniture.
Inch (in)
The inch is defined as exactly 25.4 millimeters, or 1/12 of a foot. It is used for screen sizes, tools, pipe and hardware sizes, and everyday lengths in the US and UK.
Both are units of length; the base unit used internally is m.
Notes
- The inch, foot, yard and mile are the international units, defined exactly in meters (1 in = 0.0254 m). US survey units are not included.
- The nautical mile is the international nautical mile, exactly 1,852 m.
- Negative values are accepted because length can represent a signed displacement.
cm to in FAQs
How do I convert centimeters to inches?
Multiply the number of centimeters by 0.3937007874 to get inches. For example, 25 cm × 0.3937007874 = 9.84252 in.
How many inches are in one centimeter?
1 cm = 0.3937007874 in and 1 in = 2.54 cm. To go the other way, use the inches to centimeters converter.
How many inches are in 50 centimeters?
50 cm = 19.685 in, rounded to 6 significant digits. Change the value in the converter above for any other amount.
How many inches are in 30 centimeters?
30 cm = 11.811 in, rounded to 6 significant digits.
Is the cm to in conversion exact?
The ratio is exact by definition, but its decimal form does not end (0.393700787402… to 12 significant digits). The converter keeps full precision internally and rounds only the displayed answer, which you can set from 4 to 12 significant digits.
What is the difference between centimeters and inches?
A centimeter is one hundredth of a meter. It is common for everyday lengths such as height, clothing sizes and furniture. The inch is defined as exactly 25.4 millimeters, or 1/12 of a foot. It is used for screen sizes, tools, pipe and hardware sizes, and everyday lengths in the US and UK.
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