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Aspect ratio calculator

Turn a width and height into a simple ratio such as 16:9, or find the height that keeps a ratio.

Private by design: this tool runs in your browser. Nothing you add is uploaded.

How to use it

  1. Type a width and a height to see their simplest ratio.
  2. Or type a ratio, such as 16:9, and a new width.
  3. Read the matching height.
Screenshot of the Aspect ratio calculator tool on Sureno, in use
Aspect ratio calculator in use: a real screenshot of this page.

Questions and answers

What is 16:9?

A widescreen shape: the width is sixteen units for every nine of height. 1920 by 1080 is exactly 16:9.

What ratio is a phone photo?

Usually 4:3, or 16:9 for wide photos and videos. Stories and reels use 9:16.

Is anything uploaded?

No. The sums are done on this page.

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