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Home›Aspect Ratio Calculator

Aspect Ratio Calculator

Calculate aspect ratios for images, videos, and screens. Resize dimensions while maintaining proportions.

×
Aspect Ratio
16:9
Decimal: 1.7778 · 2.07 MP
1920×1080

Resize (Maintain Ratio)

→
720

Common Aspect Ratios

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Frequently Asked Questions

What is aspect ratio?▼
Aspect ratio is the proportional relationship between width and height. 16:9 means for every 16 units wide, it's 9 units tall.
Why does aspect ratio matter?▼
Maintaining aspect ratio prevents distortion when resizing. Images look stretched or squished if you change dimensions without keeping the ratio.
What ratio is best for YouTube?▼
YouTube standard is 16:9 (1920×1080 for 1080p). YouTube Shorts use 9:16 (1080×1920).
What ratio do social media platforms use?▼
Instagram Feed: 1:1 or 4:5. Stories/Reels: 9:16. Twitter: 16:9. Facebook: 1.91:1. Pinterest: 2:3.
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