What is display resolution?

Display resolution describes the number of pixels arranged horizontally and vertically on a screen. A resolution of 1920×1080 means the display has 1,920 columns and 1,080 rows of pixels. The total pixel count is simply the product of those two numbers — in this case, 2,073,600 pixels.

Resolution affects sharpness, detail, and how much content fits on screen. Higher pixel counts produce crisper images, but also require more graphics processing power and storage space for captured images or video frames.

Tool description

This tool calculates the total number of pixels in any display or image resolution. Enter the width and height in pixels and it instantly returns the total pixel count and the simplified aspect ratio. Common resolutions are available as one-click presets so you don't have to look up the numbers.

Examples

Width Height Total pixels Aspect ratio
1920 1080 2,073,600 16:9
3840 2160 8,294,400 16:9
1280 720 921,600 16:9
2560 1440 3,686,400 16:9
1179 2556 3,013,524 393:852

How it works

The calculation is straightforward:

Total pixels = Width (px) × Height (px)

The aspect ratio is derived by dividing both dimensions by their greatest common divisor (GCD), reducing the ratio to its simplest form. For example, 1920 and 1080 share a GCD of 120, giving 16:9.

Features

  • Instant pixel count as you type width and height values
  • Simplified aspect ratio calculated automatically
  • 11 built-in presets covering VGA through 8K UHD, plus popular smartphones
  • Copy buttons on all output fields
  • Works for any resolution — displays, cameras, print, video, and more

Use cases

  • Photographers and video editors comparing sensor or export resolutions to estimate file sizes and storage needs
  • Display engineers and developers verifying pixel counts when targeting specific screen resolutions or scaling factors
  • Gamers and hardware enthusiasts checking how many pixels a GPU needs to render at a given resolution before choosing display settings