Formula
Each side grows with the density:
pixels = inches × PPI
The line-screen page builds the density from lines per inch and a factor. This page takes the density as one number. Screen PPI from a diagonal is the monitor page.
Assumptions
- The density is the same on both sides.
- Inches are the image size.
- The result is exact, so a whole-inch input stays on a whole pixel.
Worked example
An 8 by 10 inch print at 300 PPI needs 2,400 × 3,000 px.
Input definitions
- Target density
- Pixels you want in each inch of the print.
- Pixels required
- The width and height of the file that meets that density.
Limitations
This is a planning figure from the numbers you type. It is not a measurement of a network, a camera, a printer, or a power supply.
Questions
How is this different from the line-screen page?
That page multiplies inches by lines per inch and a quality factor. This page multiplies by a PPI you already chose.
Where is monitor PPI?
On the screen PPI page, from a pixel resolution and a diagonal, or from a dot pitch on the pixel-density page.