To calculate DPI (or PPI), use the formula DPI = [(THP / TW) + (TVP / TL)] / 2, where THP and TVP are the total horizontal and vertical pixels, and TW and TL are the width and height of the display in inches.
The DPI Calculator, also known as the PPI Calculator, is a tool to determine the resolution or pixel density of a screen or printed material. DPI (dots per inch) and PPI (pixels per inch) are used interchangeably, although DPI is more commonly associated with printing. .
Formula
DPI = [(THP / TW) + (TVP / TL)] / 2
| Variable | Description |
|---|---|
| THP | Total horizontal pixels (screen resolution width) |
| TVP | Total vertical pixels (screen resolution height) |
| TW | Display width (in inches) |
| TL | Display height (in inches) |
Solved Calculations
Example 1: DPI for a 1920×1080 Monitor
| Step | Value |
|---|---|
| Total Horizontal Pixels (THP) | 1920 |
| Total Vertical Pixels (TVP) | 1080 |
| Display Width (TW) | 13.3 inches |
| Display Height (TL) | 7.5 inches |
| Horizontal DPI (THP / TW) | 1920 ÷ 13.3 = 144.36 |
| Vertical DPI (TVP / TL) | 1080 ÷ 7.5 = 144.00 |
| DPI = (144.36 + 144.00) / 2 | 144.18 |
Example 2: DPI for a 300 DPI Print Image
| Step | Value |
|---|---|
| Total Horizontal Pixels (THP) | 3600 |
| Total Vertical Pixels (TVP) | 2400 |
| Display Width (TW) | 12 inches |
| Display Height (TL) | 8 inches |
| Horizontal DPI (THP / TW) | 3600 ÷ 12 = 300 |
| Vertical DPI (TVP / TL) | 2400 ÷ 8 = 300 |
| DPI = (300 + 300) / 2 | 300 |
What is DPI Calculator (PPI)?
A DPI Calculator (PPI) is a handy tool for determining the dots per inch (DPI) or pixels per inch (PPI) of digital displays or printed materials. These measurements are critical for understanding image quality, resolution, and scaling, especially for design, printing, or display calibration.
This tool helps calculate PPI by considering the resolution and dimensions of a display or image. For example, it can determine the PPI of a 1920×1080 monitor or help convert DPI to pixels for printing purposes.
The calculator simplifies queries like how to calculate DPI or the difference between DPI vs. PPI, offering precise results tailored to the project’s needs.
Final Words:
In summary, the DPI Calculator (PPI) is an essential resource for calculating and converting resolution metrics. It streamlines the process of ensuring optimal image quality for both digital and print projects, saving time and ensuring professional results.
