CSS Design Tools

Aspect Ratio Generator

Preview

Ratio: 16 / 9

Padding fallback: 56.2500%

CSS Output

aspect-ratio: 16 / 9;
/* fallback */
padding-top: 56.2500%;

What is an Aspect Ratio Generator?

This tool generates CSS aspect-ratio values from width and height units.

It also provides a padding-top fallback for older layout patterns.

How to use

  1. Enter width and height ratio values.
  2. Check the live box preview.
  3. Copy aspect-ratio output.
  4. Use padding fallback when needed.

Example usage

Create 16:9 media containers for video cards that stay proportional across breakpoints.

Tips

  • Match ratios to real media assets for less cropping.
  • Use consistent ratios in content grids.
  • Prefer native aspect-ratio in modern browsers.
  • Keep fallback only where project support requires it.

FAQ

Do I still need padding hacks?
Mostly no for modern browsers, but fallback can help legacy scenarios.
Can aspect-ratio be used on images?
Yes, it works on block elements including wrappers and media containers.
What happens when content overflows?
Normal overflow rules apply; you may need object-fit or overflow controls.
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