How to convert Inches to Millimeters
One inch equals 25.4 millimeters. To convert, multiply the value in inches by 25.4: mm = in × 25.4.
Inches to Millimeters chart
| Inches (in) | Millimeters (mm) |
|---|---|
| 1 in | 25.4 mm |
| 2 in | 50.8 mm |
| 3 in | 76.2 mm |
| 4 in | 101.6 mm |
| 5 in | 127 mm |
| 10 in | 254 mm |
| 15 in | 381 mm |
| 20 in | 508 mm |
| 25 in | 635 mm |
| 50 in | 1,270 mm |
| 100 in | 2,540 mm |
| 1,000 in | 25,400 mm |
Related length converters
Millimeters to InchesInches to CentimetersInches to MetersInches to KilometersInches to FeetInches to YardsInches to Miles
Frequently asked questions
How many millimeters are in a inch?
There are 25.4 millimeters in 1 inch.
How do I convert inches to millimeters?
Multiply the number of inches by 25.4. For example, 10 in × 25.4 = 254 mm.
What is 10 in in mm?
10 in = 254 mm.