Convert Millimeters to Inches
Convert millimeters to inches instantly. Free, accurate, with a reference table and the exact formula (1 in = 25.4 mm).
1 mm = 0.03937007874 in
Common length conversions
- 1 m = 3.280839895 ft
- 1 km = 0.6213711922 mi
- 1 cm = 0.3937007874 in
- 1 in = 2.54 cm
- 1 mi = 1.609344 km
- 1 ft = 0.3048 m
Formula
inches = mm ÷ 25.4
Built-in to the calculator above — no need to do the math by hand.
Millimeters to Inches table
| mm | in |
|---|---|
| 1 mm | 0.03937007874 in |
| 2 mm | 0.07874015748 in |
| 3 mm | 0.1181102362 in |
| 5 mm | 0.1968503937 in |
| 10 mm | 0.3937007874 in |
| 25 mm | 0.9842519685 in |
| 50 mm | 1.968503937 in |
| 100 mm | 3.937007874 in |
| 250 mm | 9.842519685 in |
| 500 mm | 19.68503937 in |
| 1000 mm | 39.37007874 in |
About Millimeters to Inches
Converting millimeters to inches is one of the most common length conversions people search for — used in trade, engineering, cooking, travel, and everyday problem-solving. The math itself is a fixed conversion factor (inches = mm ÷ 25.4), but doing it by hand every time is slow and error-prone. This page gives you an instant live converter, a reference table for common values, and the formula broken out so you can trust the result. Everything runs in your browser, and the conversion happens the moment you type — no button to press, no reload, no upload.
How to convert mm to in
- 1Type your value in the Millimeters input above.
- 2The Inches result updates instantly to the right precision.
- 3Compare against the reference table below for common values.
- 4Copy the answer or bookmark the page for next time.