Inches to Millimeters
Convert inches to millimeters — type a value in either box for an instant result.
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Millimeters
1 in = 25.4 mm · multiply by 25.4
| Inches | Millimeters |
|---|---|
| 1 in | 25.4 mm |
| 2 in | 50.8 mm |
| 3 in | 76.2 mm |
| 5 in | 127 mm |
| 10 in | 254 mm |
| 25 in | 635 mm |
| 50 in | 1270 mm |
| 100 in | 2540 mm |
How to use
- Type a value in either field.
- The other unit updates instantly.
- Use the reference table for common values.
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FAQ
How many millimeters are in a inche?
1 in = 25.4 mm.
Is this converter free?
Yes — it runs instantly in your browser, with no signup.
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