1 inch equals 25.4 mm. Type any number — or a calculation — and the answer updates instantly.
1 in = 25.4 mm · type math like (12*4)+6.5
| in | mm |
|---|---|
| 1 | 25.4 |
| 2 | 50.8 |
| 3 | 76.2 |
| 5 | 127 |
| 10 | 254 |
| 20 | 508 |
| 25 | 635 |
| 50 | 1 270 |
| 100 | 2 540 |
| 500 | 12 700 |
| 1 000 | 25 400 |
mm = in × 25.4
Going the other way: 1 mm = 0.039370079 in.
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