Inches to centimeters (in to cm)
Convert inches to centimeters. For length, 1 in equals 2.54 cm.
Converter
in to cm conversion table
| Inches | Centimeters |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 25 in | 63.5 cm |
| 50 in | 127 cm |
| 100 in | 254 cm |
| 1000 in | 2540 cm |
Formula
cm = in × 2.54
Worked example
25 in × 2.54 = 63.5 cm
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 in to cm = 2.54 cm
- 5 in to cm = 12.7 cm
- 100 in to cm = 254 cm
- 70 in to cm = 177.8 cm
- 50 cm to in = 19.685 in
- 30 cm to in = 11.811 in
About inches and centimeters
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.
Centimeter (cm)
A centimeter is one hundredth of a meter. It is common for everyday lengths such as height, clothing sizes and furniture.
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.
in to cm FAQs
How do I convert inches to centimeters?
Multiply the number of inches by 2.54 to get centimeters. For example, 25 in × 2.54 = 63.5 cm.
How many centimeters are in one inch?
1 in = 2.54 cm and 1 cm = 0.3937007874 in. To go the other way, use the centimeters to inches converter.
How many centimeters are in 7.5 inches?
7.5 in = 19.05 cm, rounded to 6 significant digits. Change the value in the converter above for any other amount.
How many centimeters are in 15 inches?
15 in = 38.1 cm, rounded to 6 significant digits.
What is the formula for inches to centimeters?
cm = in × 2.54, where in is the number of inches and cm is the result in centimeters. The reverse is in = cm × 0.3937007874.
Is the in to cm conversion exact?
Yes. The factor 2.54 follows directly from the unit definitions (The inch is defined as exactly 25.4 millimeters, or 1/12 of a foot; a centimeter is one hundredth of a meter), so the only rounding is in the digits you choose to display.
What is the difference between inches and centimeters?
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. A centimeter is one hundredth of a meter. It is common for everyday lengths such as height, clothing sizes and furniture.
Related converters
Reverse: Centimeters to inches.
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Guide
Read: Inch Fractions to mm Chart.