Inches to Millimeters Converter
Convert inches to millimeters online for free. Instant, accurate conversion with a handy reference table — runs in your browser.
25.4
1 inches = 25.4 millimeters
| Inches | Millimeters |
|---|---|
| 1 | 25.4 |
| 5 | 127 |
| 10 | 254 |
| 25 | 635 |
| 50 | 1,270 |
| 100 | 2,540 |
Frequently asked questions
- How do I convert inches to millimeters?
- Take the value in inches and multiply by 25.4. Or just type the value above — the result updates instantly.
- How accurate is the conversion?
- Conversions use exact internationally agreed factors and display up to 6 significant digits.
- Is this tool free?
- Yes, completely free with no signup required and no limits for normal use.