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Aspect Ratio Conversions

Calculate pixel dimensions for aspect ratios like 4:3, 16:9, and 21:9.
Find width or height from one dimension for video production, printing, and web design.

Aspect Ratio Calculator

Calculate pixel width or height for any aspect ratio including 4:3, 16:9, 21:9, and custom ratios. Enter one dimension to get the other.
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Copy the code below and paste it into your website or blog.
The calculator will work directly on your page.