Inch to Millimeter Converter
1 in = 25.4 mm
1 in = 25.4 mm
Inch to Millimeter Table
| Inch (in) | Millimeter (mm) |
|---|---|
| 0.01 | 0.254 |
| 0.1 | 2.54 |
| 1 | 25.4 |
| 2 | 50.8 |
| 5 | 127 |
| 10 | 254 |
| 20 | 508 |
| 50 | 1,270 |
| 100 | 2,540 |
| 500 | 12,700 |
| 1000 | 25,400 |
How to Convert Inch to Millimeter
To convert Inch (in) to Millimeter (mm), use the formula: 1 in = 25.4 mm.
For example, to convert 5 in to mm: 5 in = 127 mm. Similarly, 10 in = 254 mm, 25 in = 635 mm, and 100 in = 2,540 mm.
To convert in the other direction, 1 mm = 0.03937 in. Simply enter your value in either field above for instant bi-directional conversion.
What is a Inch?
An inch (in) is an imperial unit equal to 1/12 of a foot or 2.54 centimeters. Inches are used for screen sizes, paper dimensions, and precise measurements in the US and UK.
What is a Millimeter?
A millimeter (mm) is one thousandth of a meter. Millimeters are used in engineering, machining, and rainfall measurements.
Common Inch to Millimeter Conversions
Here are some frequently looked-up conversions between Inch and Millimeter:
- 1 in = 25.4 mm
- 5 in = 127 mm
- 10 in = 254 mm
- 25 in = 635 mm
- 100 in = 2,540 mm