What is Aspect Ratio?

aspect ratio

Short Answer

Aspect ratio is the ratio between the width and height of the screen. It’s noted in the form of W:H, which is interpreted as pixels in width for every H pixels in height.

When buying a new PC monitor or perhaps a TV screen, you’ll stumble on the specification called “Aspect Ratio”. This is essentially just the ratio between the width and height of the display. The higher the first number compared to the last number, the wider the screen will be compared to the height.

Most monitors today have an aspect ratio of 16:9 (Widescreen) and we are seeing more and more gaming monitors getting a 21:9 aspect ratio, also referred to as UltraWide. Another known aspect ratio is 4:3. Finding a 16:10 monitor today is very difficult.

Here’s a list of aspect ratios and a bunch of associated resolutions with that specific aspect ratio:

  • 21:9 aspect ratio: 2560×1080, 3440×1440 and 5120×2160
  • 16:9 aspect ratio: 1280×720 (HD), 1366×768, 1600×900, 1920×1080 (Full HD), 2560×1440, 3840×2160 (4K UHD), 5120×2880 (5K) and 7680×4320 (8K)
  • 16:10 aspect ratio: 1280×800, 920×1200 and 2560×1600
  • 4:3 aspect ratio: 1400×1050, 1440×1080 , 1600×1200, 1920×1440, and 2048×1536

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