Convert a value from inches to centimeters using the tool below:
Need to convert inches to centimeters (cm) quickly and accurately? Whether you're dealing with height, width, screen size, clothing, or engineering measurements, converting from inches to cm is a crucial part of international communication and precision work. This guide will help you understand how to convert inches to centimeters, use the correct formula, explore real-world examples, and access conversion charts—all in one place.
The inch (") is part of the imperial system, primarily used in the United States, while the centimeter (cm) is a metric unit widely used across the world in fields like education, science, medicine, and engineering. Converting inches to cm allows for seamless international collaboration, shopping, academic work, and design across different countries.
Here are some scenarios where inches to cm conversion is required:
To convert inches to centimeters, use this simple formula:
Centimeters = Inches × 2.54
This is because one inch is exactly equal to 2.54 centimeters, based on international standards.
Convert 10 inches to cm:
10 × 2.54 = 25.4 cm
Convert 5.5 inches to cm:
5.5 × 2.54 = 13.97 cm
| Inches | Centimeters (cm) |
|---|---|
| 1 inch | 2.54 cm |
| 2 inches | 5.08 cm |
| 5 inches | 12.70 cm |
| 10 inches | 25.40 cm |
| 12 inches (1 foot) | 30.48 cm |
| 15 inches | 38.10 cm |
| 20 inches | 50.80 cm |
| 24 inches | 60.96 cm |
| 36 inches (3 feet) | 91.44 cm |
You can use a simple formula in Excel to convert inches to centimeters:
=A1*2.54
Where A1 is the cell containing the value in inches.
To convert centimeters back to inches, use this formula:
Inches = Centimeters ÷ 2.54
Convert 100 cm to inches:
100 ÷ 2.54 = 39.37 inches
function inchesToCm(inches) {
return inches * 2.54;
}
This function can be used in any web application that needs dynamic unit conversion.
1 inch = 2.54 cm
5 × 2.54 = 12.7 cm
Multiply the number of inches by 2.54.
12 × 2.54 = 30.48 cm
Yes. You can convert human height from inches to cm using the same formula. It's commonly used in medical and athletic contexts.
Converting inches to centimeters is essential for anyone working or interacting internationally. Whether you're a student, a professional, or a shopper, using the right measurement unit can prevent confusion, mistakes, and miscommunications. Our converter simplifies this task instantly and accurately. Just multiply by 2.54—or use our built-in tool above—and you’re good to go!
Bookmark this page for quick conversions, and check out our related tools for other common conversions!
An inch, symbolized as in, is one of the most recognized and commonly used units of length in the United States, Canada, and the United Kingdom. Though the metric system has become the global standard in most countries, inches are still used in various fields including construction, design, screen sizes, tools, and daily life. In this comprehensive guide, we’ll explore what inches are, their history, how they compare with metric units, conversion formulas, real-life uses, and frequently asked questions.
An inch is a unit of length in the Imperial and U.S. customary measurement systems. It is defined as exactly:
The inch is abbreviated as in or marked with a double prime symbol (″). For example, 6 inches can be written as 6 in or 6″.
The word "inch" originates from the Latin word uncia, meaning a one-twelfth part. Historically, the inch was defined based on the width of a human thumb or three grains of barley placed end to end.
In 1959, countries such as the United States and members of the Commonwealth agreed to standardize the inch as exactly 2.54 centimeters—known as the “international inch.”
in × 2.54 = cmin × 25.4 = mmin × 0.0254 = min ÷ 12 = ftTVs, monitors, and mobile devices list screen sizes in inches, measured diagonally from one corner of the screen to the opposite corner.
Inches are used to measure wood, piping, metal, nails, bolts, and other materials. It allows for precise yet practical dimensions in construction and remodeling.
Wrenches, screwdrivers, drill bits, and fasteners are often measured in inches, especially in regions that follow the Imperial system.
Waist sizes, collar sizes, and inseams are often measured in inches. For example, men’s jeans might say “34x30,” meaning a 34-inch waist and 30-inch leg length.
Page dimensions, photo sizes, and posters are often measured in inches, such as 8.5"x11" paper size (standard U.S. letter).
While most of the world uses centimeters due to the metric system, inches are still the standard in the U.S., especially in industries like manufacturing and engineering.
Understanding both systems is essential for global compatibility and technical precision.
Inch rulers are divided into small segments. Most rulers in the U.S. divide each inch into 16 or 32 smaller parts.
This allows users to measure very small dimensions accurately, which is crucial in carpentry and machining.
In math problems, inches are used to calculate length, area, and volume:
12 inches make up 1 foot.
Use the formula: cm × 0.3937 = inches. For example, 10 cm × 0.3937 ≈ 3.937 in.
It is a longstanding convention in electronics, and the diagonal measurement gives a standardized size across models.
No. Inch belongs to the Imperial and U.S. customary systems, not the metric system.
| Inches | Centimeters | Millimeters | Feet |
|---|---|---|---|
| 1 in | 2.54 cm | 25.4 mm | 0.083 ft |
| 5 in | 12.7 cm | 127 mm | 0.417 ft |
| 12 in | 30.48 cm | 304.8 mm | 1 ft |
| 24 in | 60.96 cm | 609.6 mm | 2 ft |
| 36 in | 91.44 cm | 914.4 mm | 3 ft |
| 72 in | 182.88 cm | 1828.8 mm | 6 ft |
If you frequently need to convert inches to other units, try using our fast and accurate online tools like:
These tools offer precise results and save time in manual calculations, especially for professionals.
Inches remain a vital part of everyday measurement systems in various countries and industries. Whether you're buying a TV, designing furniture, working with tools, or tailoring clothes, understanding inches is essential. With its rich history and ongoing relevance, the inch continues to be a practical and accurate unit of length.
Need conversions on the go? Bookmark our Inch Conversion Calculator and make precise measurements in just a click!