Inches to millimeters (mm) conversion table shows the most common values for the quick reference. Alternatively, you may use the converter below to convert any other values if wondering how many millimeters in an inch.
1 Inch = 25.4 Millimeters
Inch is a unit of length in different types of systems such as imperial and us customary and widely used daily. The abbreviation is "in" and also the symbol is a double prime ( " ).
Millimeter is a metric length unit and equal to one thousandth of a meter. Spelled as millimetre in most of the countries. Used widely to measure small distances in engineering and machining. The abbreviation is "mm".
For other length unit conversions, please go to Length Conversion