How to convert inches to millimeters
One inch equals 25.4 millimeters, so multiply the number of inches by 25.4. For example, 5 in × 25.4 = 127 mm.
Inches to millimeters table
| Inches (in) | Millimeters (mm) |
|---|---|
| 0.1 in | 2.54 mm |
| 0.5 in | 12.7 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 |
| 6 in | 152.4 mm |
| 7 in | 177.8 mm |
| 8 in | 203.2 mm |
| 9 in | 228.6 mm |
| 10 in | 254 mm |
| 15 in | 381 mm |
| 20 in | 508 mm |
| 25 in | 635 mm |
| 30 in | 762 mm |
| 50 in | 1,270 mm |
| 75 in | 1,905 mm |
| 100 in | 2,540 mm |
| 250 in | 6,350 mm |
| 500 in | 12,700 mm |
| 1,000 in | 25,400 mm |
Need it the other way? Use the millimeters to inches converter, or the unit converter for any other length unit.
Questions
How many millimeters are in a inch?
1 in = 25.4 mm.
How many inches are in a millimeter?
1 mm = 0.0393700787 in.
What is 10 in in mm?
10 in = 254 mm.