Millimeters (mm) to Inches (in) Conversion

Enter Millimeter
Enter Inch

How many inches in a millimeter?

1 Millimeter (mm) is equal to 0.0393701 inch (in). To convert millimeters to inches, multiply the millimeter value by 0.0393701 or divide by 25.4.

For example, to convert 3.5 mm to inches, divide 3.5 by 25.4, that makes 0.137795 inch in 3.5 mm.

1 Millimeter = 0.0393701 Inch

How many millimeters in an inch?

1 Inch (in) is equal to 25.4 millimeters (mm). To convert inches to mm, multiply the inch value by 25.4.

For example, to find out how many millimeters in an inch and a half, multiply 1.5 by 25.4, that makes 38.1 mm in an inch and a half.

1 Inch = 25.4 Millimeters

You may also use this length and distance units conversion calculator tool to convert between inches, millimeters and all other length and distance units.

What is Inch?

Inch is an imperial and United States Customary length unit. There are 25.4 mm in 1 inch. The symbol is "in".

What is Millimeter/Millimetre?

Millimeter (millimetre) is a metric system length unit. 1 Millimeter (mm) is equal to 0.0393701 inch. The symbol is "mm".

Create Conversion Table
Click "Create Table". Enter a "Start" value (5, 100 etc). Select an "Increment" value (0.01, 5 etc) and select "Accuracy" to round the result.