Convert inches to millimeters

in
1 inch =
25.4 millimeters
* exact result

How to convert inches to millimeters

To convert inches to millimeters, multiply a inches value by 25.4.

Formula mm = in × 25.4

Example: Convert 2.5 inches to millimeters Calculations: 2.5 in × 25.4 = 63.5 mm

Inch (in)

The inch is a unit of length in the imperial and US customary systems, useful in providing precise measurements of small items. It is equal to 1/12 of a foot, or 25.4 millimeters.

Millimeter (mm)

The millimeter is a unit of length equal to 1/1000 of a meter, or approximately 0.03937 inches. It is used for precise measurements across various fields, such as engineering and construction.

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