Inches to Millimeters Converter
Convert inches to millimeters instantly. Free in to mm converter with formula and conversion table.
25.4mm
1 inch = 25.4 mm
Quick Reference
1 in25.4 mm
2 in50.8 mm
5 in127 mm
10 in254 mm
20 in508 mm
50 in1,270 mm
100 in2,540 mm
200 in5,080 mm
500 in12,700 mm
1000 in25,400 mm
Inches to Millimeters — Common Conversions
| Inches (in) | Millimeters (mm) |
|---|---|
| 0.5 | 12.700 |
| 1 | 25.400 |
| 2 | 50.800 |
| 5 | 127.000 |
| 10 | 254.000 |
| 12 | 304.800 |
Formula: 1 inch = 25.4 mm
Frequently Asked Questions
How do I convert Inches to Millimeters?
Use the formula: 1 inch = 25.4 mm. Enter a value in the converter above for instant results.
Is this converter accurate?
Yes — the conversion uses standard conversion factors. Results are calculated to 6 decimal places for precision.
Can I convert Millimeters back to Inches?
Absolutely! The converter works both ways. Enter a value in either field and the other updates automatically.