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Aspect Ratio Calculator

Aspect Ratio CalculatorAspect ratio and new dimensions. Fast, free and secure — works in your browser. By AK Computer, Dwarka.

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How to use

  1. 1 Enter the original width and height in pixels.
  2. 2 Let the tool reduce it to a simple aspect ratio like 16:9.
  3. 3 Enter a new width or height you want to scale to.
  4. 4 Read the matching dimension that keeps the ratio intact.

Frequently Asked Questions

What does a 16:9 aspect ratio mean?

A 16:9 ratio means the width is 16 units for every 9 units of height. It is the standard for modern monitors, TVs and video, giving a widescreen shape of 1920x1080 and similar resolutions.

How do I resize an image without stretching it?

Keep the same aspect ratio. If the original is 1600x900 (16:9) and you want 1280 wide, the height must be 720 so the picture scales cleanly without distortion.

What is the difference between 16:9 and 4:3?

4:3 is the older, more square shape used by legacy monitors and documents, while 16:9 is wider and suited to modern video. Mixing them adds black bars on the sides or top.