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Aspect Ratio Calculator

Calculate proportional dimensions from an original size.

  • Free, no sign-up
  • Runs in your browser
  • 100% private — runs in your browser
Sharjeel Tahir

By Sharjeel Tahir

WordPress & Technical SEO Specialist · Lahore, Pakistan

What do I need to enter?

YOUR RESULT

Ready to use

Use the example inputs or enter your own values.

Your input is processed in this browser.

Calculate proportional dimensions from an original size. Calculates height = new width × original height / original width and reports the simplified integer ratio. Update the result, inspect it, then copy or download the output. Reset restores the example inputs so you can start a new calculation.

METHOD

How does this tool work?

Calculates height = new width × original height / original width and reports the simplified integer ratio.

Enter original width, original height, new width. Update the result, inspect it, then copy or download the output. Reset restores the example inputs so you can start a new calculation.

Example inputs: Original width: 1920 · Original height: 1080 · New width: 1200.

BEFORE YOU USE THE RESULT

What are the assumptions and limitations?

Processing is local. Raster uploads are limited to 15 MB and 24 megapixels. Inspect the downloaded output; format changes can increase file size and animated images become static.

Common questions

Do I need an account?

No. This tool works in a modern browser with JavaScript enabled. Your inputs are not submitted to a server by the tool.

Can I save the result?

Use Copy for the textual result or Download for a local file. Image tools download a generated image when one is available.

Will it change my live website?

No. It produces a result for you to review. Production changes remain a separate step.

Keep working

Explore related tools for the next part of your website task, or discuss a project if you need help applying the result.

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