🖨️ Print & Typography
mm to inches Converter
Convert mm to inches instantly with a reference conversion table.
Quick answer: To convert mm to inches, multiply by 0.0393701. For example, 1 mm = 0.0393701 inches. Use the calculator below for any value.
mm to inches
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Common conversions
| mm | inches |
|---|
Formula:
How to convert mm to inches
1
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.
2
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.
3
About mm and inches
mm and inches are common print measurements.
💡 Did you know?
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.
📊 Common conversions at a glance
| mm | inches |
|---|---|
| 1 | 0.03937 |
| 2 | 0.07874 |
| 3 | 0.1181 |
| 5 | 0.1969 |
| 7 | 0.2756 |
| 10 | 0.3937 |
Reviewed for 2026. mm ↔ inches conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.