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Aspect Ratio Calculator When To Use
Aspect Ratio Calculator is worth opening whenever you need to resize a photo, video frame, or design canvas without stretching or squashing it. This page covers when that fits and when it does not.
When it fits
Use it before resizing an image or video export, when picking a crop size that matches a target platform (like 16:9 for widescreen video or 9:16 for a vertical mobile video), or when you just want to know what ratio a given width and height reduce to.
What to expect
The calculation runs locally in the browser - no upload and no account. It only computes the numbers; it does not crop, resize, or export any actual image or video file.
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