mm to inches Converter
Convert mm to inches instantly: 1 mm = 0.0393701 inches. Free converter with the formula, a reference table and FAQs — no sign-up.
| mm | inches |
|---|
How to convert mm to inches
Enter your value
Type the number of mm you want to convert into the left box. The result in inches appears instantly in the right box. You can also type into the right box to convert in the other direction.
Use the swap button
Click the ⇄ Swap button to reverse the conversion — inches to mm. Your current value carries across so you don't have to re-enter anything.
About mm and inches
mm and inches are common print measurements.
Worked examples: mm to inches
Multiply the mm value by 0.0393701 to get inches. A few quick examples:
- 5 mm × 0.0393701 = 0.19685 inches
- 25 mm × 0.0393701 = 0.984252 inches
- 250 mm × 0.0393701 = 9.84253 inches
Related conversions
210mm × 297mm = A4. 8.27" × 11.69". This is the most common paper size in the world except North America. The A-series ratio (√2 ≈ 1.414) means folding any A-size in half gives the next A-size — the arithmetic works out exactly.
| mm | inches |
|---|---|
| 1 | 0.03937 |
| 2 | 0.07874 |
| 3 | 0.1181 |
| 5 | 0.1969 |
| 7 | 0.2756 |
| 10 | 0.3937 |
Frequently asked questions
How do I convert mm to inches?
To convert mm to inches, multiply by 0.0393701. Or use the calculator above for instant results.
How many inches are in 1 mm?
1 mm equals 0.0393701 inches.
Is the mm to inches converter free?
Yes, the mm to inches converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.