How do I convert Millimetres to Inches?

To convert Millimetres (mm) to Inches (in), use the formula: 1 mm = 0.03937007874 in. For example, 1 mm equals 0.03937 in.

How many in are in one mm?

There are 0.03937 inches in one millimetres (1 mm = 0.03937 in).

What is the conversion formula for mm to in?

The exact conversion formula is: 1 mm = 0.03937007874 in. This converter uses this formula to give you an accurate result for any value you enter.

Millimetres to Inches Converter

This free length converter converts Millimetres (mm) to Inches (in) and back again. The exact conversion factor is 1 mm = 0.03937 in, so 10 mm equals 0.393701 in.

Type a value in either field — the result updates in real time. The reference table below shows common conversion values at a glance. All calculations run entirely in your browser with no data sent to any server.

Millimetres (mm)	Inches (in)
1 mm	0.03937 in
5 mm	0.19685 in
10 mm	0.393701 in
100 mm	3.937 in