About Aspect Ratio Calculator

Aspect Ratio Calculator is a focused tool for resizing images, videos, screens, and web layouts without stretching or guessing.

The homepage calculator can simplify a ratio from width and height, resize by common presets like 16:9 or 9:16, preview the frame shape, and detect an uploaded image’s dimensions locally in the browser.

Who it is for

• Creators preparing YouTube, TikTok, Reels, Shorts, and social media assets
• Designers checking banners, cards, thumbnails, and product images
• Developers converting dimensions into CSS aspect-ratio values
• Editors and marketers who need quick pixel-perfect export sizes

Privacy-minded by default

Image ratio detection runs in your browser. The selected file is used only to read dimensions on your device.

Roadmap

Planned pages include image ratio detection, video aspect ratio presets, CSS aspect-ratio helpers, social media image sizes, and dedicated calculators for common ratios.