Aspect Ratio & Dimension Calculator

Scale image and video resolutions dynamically, calculate proportional heights or widths, and find simplified ratio fractions.

Width (px):

Height (px):

Mode / Target:

Quick Presets:

Aspect Ratio & Scale Results: Ready

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CSS Code & Responsive Snippets:

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Common Aspect Ratios Reference

16:9 Widescreen

The standard display format for modern computer monitors, high-definition television, YouTube, and web video players.

1:1 Square

Widely utilized across social media feeds like Instagram posts, profile pictures, and thumbnail grids.

9:16 Vertical

The standard portrait orientation for mobile videos, Instagram Reels, TikToks, and YouTube Shorts.

Frequently Asked Questions (FAQ)

Divide both the width and height by their greatest common divisor (GCD). For example, with 1920x1080, dividing both numbers by their GCD (120) yields the simplified ratio of 16:9.

Modern CSS provides the native `aspect-ratio` property (e.g., `aspect-ratio: 16 / 9;`), making it extremely simple to preserve element proportions during responsive reflows.