About this site

About Aspect Ratio Helper

Aspect Ratio Helper is a free collection of calculators and references for creators, designers, marketers, and developers who need proportional image and video sizes quickly.

16:9

Free sizing references and calculators.

What The Tools Do

The calculators convert width to height, height to width, simplify dimensions, and compare common ratio presets without requiring an account.

16:9, 9:16, 1:1, 4:3, wallpaper, thumbnail, and social media sizes.
Batch image checking for local files in the browser.
Common pixel tables for faster export decisions.

How We Improve Pages

We review search performance and update pages when users need clearer formulas, examples, or practical export notes.

No upload is required for normal calculator pages.
Batch checking reads local image dimensions in your browser.
Content focuses on practical sizing choices, not design theory.