How to convert millimeters to inches
To convert millimeters to inches, use the formula in = mm × 0.03937008. In other words, multiply the number of millimeters by 0.03937008 to get the equivalent in inches. For example, 5 mm equals 0.1968504 in.
MM to Inches Converter
Convert millimeters to inches instantly. 5 mm = 0.1968504 in.
1 mm = 0.03937008 in
| MM (mm) | Inches (in) |
|---|---|
| 1 mm | 0.03937008 in |
| 2 mm | 0.07874016 in |
| 3 mm | 0.1181102 in |
| 4 mm | 0.1574803 in |
| 5 mm | 0.1968504 in |
| 6 mm | 0.2362205 in |
| 7 mm | 0.2755906 in |
| 8 mm | 0.3149606 in |
| 9 mm | 0.3543307 in |
| 10 mm | 0.3937008 in |
| 15 mm | 0.5905512 in |
| 20 mm | 0.7874016 in |
| 25 mm | 0.984252 in |
| 30 mm | 1.181102 in |
| 40 mm | 1.574803 in |
| 50 mm | 1.968504 in |
| 75 mm | 2.952756 in |
| 100 mm | 3.937008 in |
| 250 mm | 9.84252 in |
| 500 mm | 19.68504 in |
| 1,000 mm | 39.37008 in |
Millimeter and Inch
The millimeter (mm) and the inch (in) are both units of length. This page gives you an instant, exact conversion between them, a reference table for the most common values, and the underlying formula so you can check the maths yourself. All calculations run in your browser — nothing you type is sent anywhere.
Need to go the other way? Use the Inches to MM converter. For all units at once, try the full Length Converter.
Frequently Asked Questions
How do I convert millimeters to inches?
Use the formula in = mm × 0.03937008. For example, 5 mm equals 0.1968504 in. Just enter your value in the converter above to get an instant result.
What is 1 millimeter in inches?
1 mm = 0.03937008 in. You can multiply any number of millimeters by this figure to convert it, or use the calculator above for exact results.
How do I convert inches back to millimeters?
Use the reverse conversion: 1 in = 25.4 mm. Our Inches to MM converter does this for you.