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Calculate image, video, and layout aspect ratios from width and height.
Common presets
Ratio
16:9
aspect-ratio: 16 / 9;Type the pixel dimensions of your image, video, ad slot, or layout.
The calculator simplifies the dimensions to a clean aspect ratio.
Copy the aspect-ratio CSS value or calculate a missing dimension from a target width or height.
Use this calculator to convert pixel dimensions into a simple aspect ratio and to find matching widths or heights for responsive layouts. It is useful for YouTube thumbnails, social images, ad creatives, product photos, embeds, and CSS aspect-ratio rules.
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Format and beautify CSS code with proper indentation.
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Minify and compress CSS by removing whitespace and comments.