Inch to CentimeterConverter
Instantly convert Inch (in) to Centimeter (cm). Free, accurate, and easy to use.
How to Convert Inch to Centimeter
To convert Inch (in) to Centimeter (cm), multiply your value by 2.54.
Example: 5 in × 2.54 = 12.7 cm
What is a Inch?
The inch is a unit of length in the imperial and US customary systems, defined exactly as 2.54 centimeters since the International Yard and Pound Agreement of 1959. It is divided into binary fractions — halves, quarters, eighths, and sixteenths — and remains standard for screen sizes, display resolutions, and construction lumber in the United States. Historically, the inch derived from the width of a human thumb or three barleycorns placed end to end. A US letter sheet of paper measures 8.5 inches wide.
What is a Centimeter?
The centimeter is one hundredth of a meter — equal to 10 millimeters or approximately 0.394 inches. It appears on most rulers and measuring tapes sold outside the United States and is the standard unit for body measurements such as height and waist size. A typical adult fingernail grows roughly 3 mm (0.3 cm) per month. Centimeters are also used for paper sizes and small furniture dimensions worldwide.
Inch to Centimeter Conversion Table
| Inch (in) | Centimeter (cm) |
|---|---|
| 0.001 in | 0.00254 cm |
| 0.01 in | 0.0254 cm |
| 0.1 in | 0.254 cm |
| 0.5 in | 1.27 cm |
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 20 in | 50.8 cm |
| 50 in | 127 cm |
| 100 in | 254 cm |
| 200 in | 508 cm |
| 500 in | 1270 cm |
| 1000 in | 2540 cm |
| 5000 in | 12700 cm |
| 10000 in | 25400 cm |
| 50000 in | 127000 cm |
| 100000 in | 254000 cm |
| 1000000 in | 2540000 cm |
| 1000000000 in | 2.5400e+9 cm |
Frequently Asked Questions
How do I convert Inch to Centimeter?
Multiply the Inch value by 2.54. Formula: cm = in × 2.54. Example: 10 in = 25.4 cm.
How many Centimeter are in one Inch?
One Inch (in) equals 2.54 Centimeter (cm).
How many Inch are in one Centimeter?
One Centimeter (cm) equals 0.39370079 Inch (in).
What is the exact conversion factor from Inch to Centimeter?
The conversion factor is 2.54. Multiply any in value by this number to get cm. For the reverse, multiply by 0.39370079.
How do I convert Centimeter back to Inch?
Divide by 2.54, or equivalently multiply by 0.39370079. Formula: in = cm ÷ 2.54.
Is the Inch-to-Centimeter conversion internationally standardized?
Yes. Both units are defined by international standards (SI or the international yard/pound agreement), so the conversion factor 2.54 is exact and universally agreed upon.