Aspect Ratio Calculator
Calculate display aspect ratio from width and height in pixels or any unit.
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Aspect Ratio
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Decimal Ratio
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Diagonal (if inches)
Recent Calculations
What Is Aspect Ratio?
Aspect ratio describes the proportional relationship between width and height. Common ratios include 16:9 (widescreen), 4:3 (standard), and 21:9 (ultrawide).
Formula
Aspect Ratio = Width:Height (simplified by GCD)Example
1920×1080 pixels = 16:9 aspect ratio (widescreen).
Frequently Asked Questions
What's the most common aspect ratio?
16:9 is standard for monitors, TVs, and video. 4:3 was the old TV/monitor standard.
What aspect ratio is Instagram?
Instagram posts: 1:1 (square) or 4:5 (portrait). Stories: 9:16. Landscape: 1.91:1.