Inch to Millimeter (Inch to Millimeter)
Result
25.4 Millimeter
Formula
Millimeter = Inch × 25.4
1 Inch = 25.4 Millimeter, and 1 Millimeter = 0.03937007874 Inch.
In CSS and desktop publishing, 1 inch = 72 points = 96 pixels, so 1 px = 0.75 pt. The em is relative to the current font size; this converter assumes a 12 pt base.
Worked examples
- 1 Inch × 25.4 = 25.4 Millimeter
- 10 Inch × 25.4 = 254 Millimeter
- 100 Inch × 25.4 = 2,540 Millimeter
Common mistakes
- CSS pixels are reference units, not physical screen pixels; high-density displays draw several device pixels per CSS pixel.
- An em depends on the font size it is used in. Change the base and every em value changes.
Inch to Millimeter table
| Inch (Inch) | Millimeter (Millimeter) |
|---|---|
| 1 | 25.4 |
| 2 | 50.8 |
| 5 | 127 |
| 10 | 254 |
| 20 | 508 |
| 50 | 1,270 |
| 100 | 2,540 |
| 1,000 | 25,400 |
The units
- Inch (Inch)
- 1 Inch = 72 Point.
- Millimeter (Millimeter)
- 1 Millimeter = 2.834645669 Point.
Sources for these factors
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy