Convert Inches to Centimeters and Millimeters
Our online converter helps you quickly and precisely convert inches to millimeters (mm) and centimeters (cm) – and vice versa. Especially in precision mechanics and model making, you often encounter measurements in the inch system, for example, with tools, screws, or materials from Anglo-American regions.
What is an Inch?
An inch corresponds exactly to 25.4 millimeters or 2.54 centimeters. The inch measurement is internationally marked with the symbol " (quotation marks) or the abbreviation in. In many technical fields – particularly for pipes, threads, and tools – inch measurements remain standard.
Understanding Fractional Inches
In the Anglo-Saxon measurement system, inch values are often given as fractions, e.g., 1/4", 3/8", or 7/16". Our calculator shows you both the decimal value and the nearest fractional inch equivalent. The conversion table below the calculator lists all common fractional inch values from 1/64" to 1" with their exact metric equivalents.
How the Converter Works
Select the conversion direction: Inch → Metric converts inch values to mm and cm. Metric → Inch converts mm or cm values to inches and also displays the nearest fractional inch value.
At fohrmann-WERKZEUGE, you will find an extensive range of precision tools – many of which are also available in inch sizes.
