Inches to millimeters
1 in = 25.4 mm
⇄
millimeters (mm)
Formula
Multiply the value in in by 25.4 to get mm.
mm = in × 25.4
Conversion table
| inches (in) | millimeters (mm) |
|---|---|
| 0.1 | 2.54 |
| 0.5 | 12.7 |
| 1 | 25.4 |
| 2 | 50.8 |
| 3 | 76.2 |
| 4 | 101.6 |
| 5 | 127 |
| 6 | 152.4 |
| 7 | 177.8 |
| 8 | 203.2 |
| 9 | 228.6 |
| 10 | 254 |
| 15 | 381 |
| 20 | 508 |
| 25 | 635 |
| 30 | 762 |
| 40 | 1,016 |
| 50 | 1,270 |
| 75 | 1,905 |
| 100 | 2,540 |
| 250 | 6,350 |
| 500 | 12,700 |
| 1,000 | 25,400 |
Frequently asked questions
How many mm are in 1 in?
1 in = 25.4 mm.
How do I convert in to mm?
Multiply the value in in by 25.4 to get mm. mm = in × 25.4
What is 10 in in mm?
10 in = 254 mm.