Percentages, ratios & change.
Length, weight & temperature.
Days between dates, add & subtract.
Built with privacy in mind. All processing happens entirely in your browser using open-source libraries.
An aspect ratio is the proportional relationship between a width and a height. This calculator reduces any two numbers to their simplest ratio, shows the decimal value, and applies ready-made presets for YouTube, Instagram, X, TikTok and more.
Every social platform crops content to its own dimensions. A wrong ratio means cropped faces, cut-off captions or stretched images. The live preview draws the crop lines over a canvas so you can see exactly what stays inside the frame before you export.
Yes, free with no signup or limits.
YouTube, Instagram (post and story), X/Twitter, LinkedIn, Facebook, TikTok and Pinterest.
Yes, the decimal value is shown next to the simplified ratio.