1 mm equals 0.0393701 in. To convert Millimeter to Inch, multiply the value by 0.0393701; divide by 0.0393701 to convert back. Enter any number above and the result appears instantly — free and entirely in your browser.
How do you convert Millimeter to Inch?
The conversion formula is in = mm × 0.0393701. The conversion factor is fixed by definition, so the result is always exact.
Millimeter to Inch conversion table
| mm | in |
|---|---|
| 1 mm | 0.0393701 in |
| 5 mm | 0.19685 in |
| 10 mm | 0.393701 in |
| 50 mm | 1.9685 in |
| 100 mm | 3.93701 in |
What is Millimeter (mm)?
The millimetre (mm) is one thousandth of a metre, the smallest common metric length unit. It is used for rainfall, screw sizes and material thickness.
What is Inch (in)?
The inch (in) is an imperial length unit defined as exactly 2.54 cm. It is used in the US and UK for screen sizes, body height and DIY measurements.
Why convert Millimeter to Inch?
Most of the world measures length in metres and centimetres, while the US and UK also use inches, feet and miles. Converting between metric and imperial is a daily need for travel, DIY and online shopping.
By the 1959 international agreement, the inch is exactly 2.54 cm and the foot exactly 0.3048 m. So 1 metre = 3.2808 feet and 1 kilometre = 0.6214 miles.
How to convert Millimeter to Inch
- Enter the value in Millimeter into the left field of the converter.
- Read the result in Inch instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (Inch to Millimeter).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.