IN to MM Converter
Use this free online inches to mm converter tool to convert physical inches to millimeters. This converter bridges imperial and metric measurement systems for precise measurements. Essential for detailed design and engineering work.
To convert inches to millimeters, multiply the inch value by 25.4 (since 1 inch equals 25.4 millimeters). This is the standard conversion between imperial and metric systems.
Conversion Formula
mm = in × 25.4
For example, to convert 1 inch to millimeters, calculate 1 × 25.4 = 25.4mm. Similarly, 2 inches equals 50.8mm because 2 × 25.4 = 50.8.
IN to MM Converter Conversion Table
| IN | MM |
|---|---|
| 0.1in | 2.54mm |
| 0.25in | 6.35mm |
| 0.5in | 12.7mm |
| 0.75in | 19.05mm |
| 1in | 25.4mm |
| 1.5in | 38.1mm |
| 2in | 50.8mm |
| 3in | 76.2mm |
| 4in | 102mm |
| 5in | 127mm |
| 6in | 152mm |
| 8in | 203mm |
| 10in | 254mm |
| 12in | 305mm |
| 14in | 356mm |
| 16in | 406mm |
| 18in | 457mm |
What is IN?
Inches (in) are an absolute CSS unit representing physical inches, primarily used for print media. In web contexts, 1 inch equals 96 pixels based on the CSS specification. While rarely used for screen design, inches are essential for print stylesheets and ensuring accurate physical dimensions in printed documents.
What is MM?
Millimeters (mm) are an absolute CSS unit representing physical millimeters, primarily used for precise print measurements. In web contexts, 1mm equals approximately 3.78 pixels. Millimeters are most useful in print stylesheets and international design contexts where metric precision is required.