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Aspect Ratio Calculator


Aspect Ratio Tool

Calculate and convert aspect ratios for images, video, and responsive design.


Calculate Ratio

Resize by Ratio



Common Aspect Ratios

RatioDecimalCommon Use
16:91.778HD/4K video, monitors, YouTube
4:31.333Classic TV, iPad, presentations
21:92.333Ultrawide monitors, cinema
1:11.000Instagram square, profile photos
3:21.500DSLR photos, Surface devices
9:160.563Phone portrait, Stories, TikTok
2.39:12.390Anamorphic widescreen cinema


About Aspect Ratios

Aspect ratios define the proportional relationship between width and height of an image, video, or display.

Learn more: Aspect Ratio CSS Property


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