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Private browser tool

Image Aspect Ratio Calculator

Read an image aspect ratio and calculate matching dimensions for common presets such as 16:9, 4:3, 1:1 and 4:5.

Browser-local processingNo account requiredFree to use Original stays unchanged

Why this tool exists

Calculate the target ratio before resizing so you do not accidentally stretch the image.

  • ✓ automatic ratio detection
  • ✓ common presets
  • ✓ missing-dimension calculator
  • ✓ orientation detection

Useful for

  • • social media crops
  • • video thumbnails
  • • web banners

The goal is not to add another generic converter. It is to remove a small but real step from a document, design or developer workflow.

How to use Image Aspect Ratio Calculator

  1. 01
    Choose your input.
  2. 02
    Run the operation.
  3. 03
    Review the result.
  4. 04
    Download or copy.

Frequently asked questions

Is image aspect ratio calculator free?

Yes. MAXScanner provides this tool without requiring an account for the browser workflow described on this page.

Are my files uploaded?

The advanced image tools on this page are designed to process files in the browser. The source file remains on your device during the local operation.

Can I use the result on a phone?

Yes. The page is responsive and the generated result can be downloaded from modern mobile browsers. Large batches depend on available device memory.

Does the tool change my original file?

No. The browser creates a new result or report. Your original file remains unchanged.

Continue the workflow

One tool should naturally lead to the next useful step. Explore another advanced image utility or return to the broader image toolkit.

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Image to Base64 Converter
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Base64 to Image Converter
Decode a Base64 string or data URI, preview the image and download it as a real file directly in your browser.
Image Inspector & Dimensions Viewer
Inspect an image instantly: format, file size, pixel dimensions, aspect ratio, megapixels and practical print sizes.
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Extract a practical dominant color palette from an image and copy HEX, RGB, CSS variables or JSON values.

A practical MAXScanner tip

Keep the original file until you have checked the destination requirements. A good workflow is usually: inspect → transform → verify → download → then compress or convert again only if the destination requires it.