Length converter
Convert Inches to Millimeters
1 inch = 25.4 millimeters. To convert, multiply the number of inches by 25.4.
Inches to Millimeters table
| Inches (in) | Millimeters (mm) |
|---|---|
| 1 | 25.4 |
| 2 | 50.8 |
| 3 | 76.2 |
| 5 | 127 |
| 10 | 254 |
| 25 | 635 |
| 50 | 1270 |
| 100 | 2540 |
The formula
Millimeters = inches × 25.4. Going the other way? Convert millimeters to inches.
Frequently asked questions
How many millimeters are in a inch?
One inch equals 25.4 millimeters. To convert, multiply the number of inches by 25.4.
How do you convert inches to millimeters?
Multiply the value in inches by 25.4 to get millimeters. For example, 10 inches = 254 millimeters.
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