CSS Aspect Ratio Generator

Reduce dimensions to a ratio, show the decimal ratio, and copy the CSS property.

Width

Height

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Runs locally in your browser. Generated CSS is not deployed or tested against your site automatically.

How to use this CSS Aspect Ratio Generator

Turn width and height values into a reduced CSS aspect-ratio declaration. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.