Convert Inch to Millimeter
1 Inch is equal to 25.4 Millimeter.
Formula
Millimeter = Inch × 0.0254 ÷ 0.001
About Inch and Millimeter
The Inch (in) and Millimeter (mm) are units of length. Use the converter above for instant, accurate results, or refer to the conversion table below for common values.
Inch to Millimeter table
| Inch (in) | Millimeter (mm) |
|---|---|
| 1 | 25.4 |
| 5 | 127 |
| 10 | 254 |
| 25 | 635 |
| 100 | 2540 |
Frequently asked questions
There are exactly 2.54 centimeters in one inch.
Multiply the number of miles by 1.609344 to get kilometers.