Centimeters to Inches Converter

How to Convert Centimeters to Inches

Centimeters and inches are units of length from metric and imperial systems respectively. Use the factor 2.54 to convert centimeters into inches.

The Formula

To convert centimeters to inches, divide centimeters by 2.54:

Why this matters

Using accurate unit conversion avoids tolerance and interoperability problems in manufacturing, design and documentation.

More Information

Exact factor: 1 inch is defined as exactly 2.54 centimeters. Use this exact factor for precise conversions.

History of the Inch

The inch has its origins in ancient times, with the modern definition standardized in 1959 as exactly 2.54 centimeters. Historically, the inch was based on the width of a human thumb or three grains of barley. Today, it is used primarily in the United States, Canada, and the United Kingdom for engineering, construction, and consumer products.

Common Uses for Centimeter/Inch Conversion

• International product specifications (electronics, clothing, tools)
• Woodworking and construction projects
• Science and engineering documentation
• Travel and personal height/length measurements