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Instantly calculate and convert aspect ratios for any project. Whether you're resizing images, editing video, or working on a design, our ratio calculator ensures your dimensions are pixel-perfect every time. The aspect- ratio feature is specified as a < ratio > value representing the width-to-height aspect ratio of the viewport. It is a range feature, meaning you can also use the prefixed min-aspect- ratio and max-aspect- ratio variants to query minimum and maximum values, respectively. If you’ve wondered what is aspect ratio and why it matters for images, video, and web design, this guide explains the concept in plain English, shows the exact formula, includes step-by-step examples, a handy chart, CSS tips, and a free on-page calculator. The aspect-ratio CSS property allows you to define the desired width-to-height ratio of an element's box. This means that even if the parent container or viewport size changes, the browser will adjust the element's dimensions to maintain the specified width-to-height ratio . The specified aspect ratio is used in the calculation of auto sizes and some other layout functions.
