Aspect ratio calculator

Client

Turn pixel dimensions into a readable ratio and common scaled sizes—handy for video, thumbnails, and responsive mockups.

How to use

Enter width and height in pixels (or any unit). Get simplified ratio and sample scaled dimensions.

About Aspect ratio calculator

Reduce width:height to smallest integers and preview scaled dimensions—local layout math. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.

How to use this page

Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.

Simplified ratio: 16:9
Decimal (w/h): 1.7778
1920px wide → 1080px tall
1080px tall → 1920px wide

Nearby workflows on Toolcore

  • Image resize — Max width or height, keep aspect ratio, export WebP/JPEG/PNG—local only. when units or numeric output should be checked on a related calculator.
  • Image DPI calculator — Pixels ↔ print size (inches/cm) at a chosen DPI—plan exports without uploading images. when units or numeric output should be checked on a related calculator.
  • Image convert — Convert, enhance (tone & sharpen), resize, read EXIF & export clean—WebP, JPEG, PNG in browser. when units or numeric output should be checked on a related calculator.
  • Favicon size — Standard favicon pixel sizes, dimension check on your image, and export one square PNG—browser only. when units or numeric output should be checked on a related calculator.

Common use cases

  • Confirm 1920×1080 is 16:9 before exporting video or social crops.
  • Derive height when you know target width and source aspect ratio.

Common mistakes to avoid

  • Non-integer pixels

    Simplification rounds to integers—use decimal ratio line for exact floats.

FAQ

Does this resize images?

No—it only calculates numbers; use image resize tools to change files.

Portrait vs landscape?

Order is width then height as entered.

More tools

Related utilities you can open in another tab—mostly client-side.