Calculate and scale aspect ratios for images and video.
Small technical details can decide how a page behaves in search and on the web. Use Aspect Ratio Calculator to work with width, height, original width, and original height and produce ready-to-use output you can copy into your site.
An aspect ratio is the proportion of width to height, such as 16:9. Keeping it consistent stops pictures looking stretched when resized.
New height = New width ร (Original height รท Original width). A 1920 ร 1080 image scaled to 1280 wide becomes 1280 ร 720.
If a platform needs a different ratio, crop rather than stretch, and keep the subject inside a safe central area.
Calculate and scale aspect ratios for images and video. Aspect Ratio Calculator produces output that is ready to paste into a page or settings screen, helps you check details that are easy to miss by eye, and saves a trip to separate developer or webmaster software.
You are setting up a new page and use Aspect Ratio Calculator instead of writing the output by hand.
After you place the output on your site, test the live page once to confirm everything works as intended. Search engines decide how pages are shown, so treat the output as a helpful input rather than a guarantee.
More utilities for webmasters: Image Resizer, Screen Resolution Checker, and Image Compressor.
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