Resolution Converter
Convert screen dimensions, calculate aspect ratio and pixel density, or estimate display resolution from diagonal size and DPI.
Run tool
This online resolution converter calculates display dimensions, aspect ratios, pixel density, and dot pitch across three practical calculation modes. In aspect ratio mode, entering width and height in pixels outputs the reduced integer ratio, decimal aspect ratio rounded to ten decimal places, total pixel count, and megapixels rounded to two decimal places. In pixel density mode, entering width, height, and physical diagonal screen size in inches calculates dots per inch rounded to two decimal places, dot pitch in millimeters rounded to four decimal places, and total pixel count. In resolution estimation mode, supplying a physical diagonal screen size and target dots per inch calculates the estimated width, height, and total pixel count based on a standard 16:9 widescreen display format, along with megapixels rounded to two decimal places. All input values must be positive numbers for the tool to compute results accurately.
Instructions
- Select your desired calculation mode from the mode selector.
- Enter the width and height in pixels when calculating aspect ratios or pixel density.
- Provide the diagonal screen size in inches when computing pixel density or estimating screen resolution.
- Enter the target DPI value when estimating dimensions from screen density.
- Click the calculate button to review the computed display metrics, pixel counts, and ratios in the output panel.
Examples
- Calculate the aspect ratio and total megapixels for a standard 1920 by 1080 display.
- Determine the exact DPI and millimeter dot pitch for a 27-inch 2560 by 1440 computer monitor.
- Estimate the pixel dimensions and total pixel count of a 24-inch monitor at 100 DPI using a 16:9 ratio.
FAQ
What calculation modes are supported by this tool?
The tool supports aspect ratio calculation from pixel dimensions, pixel density and dot pitch calculation from dimensions and screen size, and resolution estimation from screen size and DPI.
What aspect ratio does resolution estimation mode use?
Resolution estimation mode calculates estimated width, height, total pixels, and megapixels based on a standard 16:9 widescreen aspect ratio.
Why does the tool require positive numbers for all dimensions?
Screen dimensions, physical sizes, and pixel density values represent physical and digital measurements that must be greater than zero to produce valid geometric results.
How is dot pitch calculated in pixel density mode?
Dot pitch represents the physical distance between pixels and is computed in millimeters rounded to four decimal places using the screen dimensions and diagonal size.