What is 16:9 aspect ratio in pixels?

Common 16:9 resolutions include 1920×1080 (Full HD), 2560×1440 (2K), and 3840×2160 (4K). Any width × (width÷16×9) gives a 16:9 dimension.

How do I find the aspect ratio of an image?

Divide both width and height by their greatest common divisor. For example, 1920÷120=16, 1080÷120=9, so it's 16:9.

What aspect ratio is best for YouTube?

YouTube recommends 16:9 (landscape) for standard videos. For Shorts, use 9:16 (vertical/portrait).

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Free Aspect Ratio Calculator — Find & Calculate Ratios

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Find simplified ratios from dimensions or calculate missing dimensions from a ratio.

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About Aspect Ratios

Aspect ratio is the proportional relationship between width and height. Common ratios include 16:9 (widescreen TV/monitors), 4:3 (classic TV), 1:1 (Instagram square), and 9:16 (mobile stories). Getting the aspect ratio right prevents stretched or cropped images and videos.

Enter width and height to calculate the ratio, or enter a ratio and one dimension to find the other. Essential for video editing, web design, photography, and responsive layouts.