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Millimeters to inches converter

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Our online tools will provide quick answers to your calculation and conversion needs. On this page, you can convert length values from millimeters to inches and inches to millimeters.

Enter the value you want to convert, and leave the target field blank.

Result window

Download: Use this length converter offline with our all-in-one calculator app for Android and iOS.

Conversion formula

1 inch = 25.4 millimeters
1 millimeter = 0.0393701 inches

The symbols used are mm for millimeter and in for inch.

Sample conversion

Convert 4 millimeters to inches

4 mm = 4*0.0393701 in = 0.1574803 in

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