🔁 Length Converter
Inches to Millimeters
Convert inches (in) to millimeters (mm) instantly. 1 inch = 25.4 millimeters.
1 inch = 25.4 millimeters
Inches to Millimeters conversion table
| Inches (in) | Millimeters (mm) |
|---|---|
| 1 | 25.4 |
| 5 | 127 |
| 10 | 254 |
| 25 | 635 |
| 50 | 1270 |
| 100 | 2540 |
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How It Works
1
Enter inches
Type the value you want to convert.
2
Read the result
The equivalent in millimeters updates instantly.
3
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Change units or pick another conversion below.
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Frequently Asked Questions
How do I convert inches to millimeters?+
Enter the number of inches above and the equivalent in millimeters appears instantly. 1 inch = 25.4 millimeters.
Is the inch to millimeter converter free?+
Yes — completely free, no signup, no limits. It runs entirely in your browser and your input is never sent anywhere.
Is it accurate?+
Yes. Conversions use exact standard factors and are rounded to 6 significant figures for readability.