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Aspect Ratio Calculator

Calculate perfect dimensions for your images and videos based on common or custom ratios.
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Proportions & Dimensions

Proportional units
Proportional units
Changes recalculate height
Changes recalculate width
Resolution:1920 × 1080
CSS:

Interactive Preview

How this tool works

What it accepts, how to use it, and where your input is processed.

An Aspect Ratio describes the proportional relationship between its width and its height. It is commonly expressed as two numbers separated by a colon, such as 16:9.

Why does it matter?

  • Responsive Design: Ensure your UI containers maintain their shape across different screen sizes.
  • Content Creation: Avoid black bars (letterboxing) by matching your video resolution to the platform's standard.
  • Social Media: Optimize your posts for the specific ratios required by Instagram, LinkedIn, and X.
Need an extra feature or found an edge case?Send Feedback

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