Millimetres to Inches Converter
Convert millimetres to inches instantly — 1 millimetre = 0.03937 inches, with every other length unit, a conversion chart, feet + inches and a list mode for many values.
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- Works offline after first load
Formula: in = mm × 0.0393701
| Millimetres | Inches |
|---|---|
| 1 mm | 0.03937 in |
| 2 mm | 0.07874 in |
| 5 mm | 0.19685 in |
| 10 mm | 0.3937 in |
| 20 mm | 0.7874 in |
| 50 mm | 1.96851 in |
| 100 mm | 3.93701 in |
How to convert millimetres to inches
- Type the number of millimetres.
- Read the result in inches — and in every other unit below it.
- Swap, change the precision, convert a whole list or copy and share the result.
About Millimetres to Inches Converter
Convert millimetres to inches as you type. The result appears instantly with the exact formula, and the same value is shown in every other unit of the category at once — so one page answers all related questions.
A conversion chart lists common values, “Convert a list” handles a whole column of numbers, and you can choose the number of decimals or scientific notation. Swap the units with one click, share a link to your conversion, or print it.
Good for
- Everyday conversions for travel, shopping and recipes
- School and science homework
- Work with specifications and measurements
Tip: Type an expression like a whole column of values in “Convert a list” to convert them all at once.
Frequently asked questions
How do I convert millimetres to inches?
Use inches = millimetres × 0.03937. For example, 10 millimetres = 0.393701 inches.
Can I convert many values at once?
Yes — choose “Convert a list”, paste one value per line (a spreadsheet column works) and copy all the results.
Can I convert to other units too?
Yes. Pick any units in the From and To lists, or switch the category — length, weight, temperature, volume, area, speed, data and more.
Can it show feet and inches?
Yes — every length is also shown in feet and inches to the nearest 1/16 inch, e.g. 170 cm = 5 ft 6 15/16 in.
What are some common mm to in values?
Rounded to 3 decimal places: 1 mm = 0.039 in, 5 mm = 0.197 in, 10 mm = 0.394 in and 25 mm = 0.984 in.