The formula to convert inches to mm is simple:
1 inch = 25.4 millimeters
If you need a converter for inches to mm, we have you covered! Whether you work in engineering and construction or just need to know the dimensions of a product you find online, converting between the two is an essential skill.
To convert a value from inches to millimeters, multiply the measurement in inches by 25.4.
Quick Conversion Table
Here’s a handy table for some commonly used conversions:
| Millimeters (mm) | Inches (in) |
|---|---|
| 1 | 25.4 |
| 5 | 127 |
| 10 | 254 |
| 50 | 1270 |
Multiply 2 inches by 25.4. The result is 50.8 mm.
Using the formula, 12 inches × 25.4 = 304.8 mm.