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Aspect Ratio Calculator — Free Tool

Calculate image and video aspect ratios from pixel dimensions. See which social media platforms match your ratio.

Aspect Ratio
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Enter width and height to calculate

Features

  • Calculate ratio from width and height
  • Decimal ratio display
  • Visual proportion preview
  • Platform compatibility matching

Common social media aspect ratios

1:1Instagram Feed, Facebook Post, TikTok Square
4:5Instagram Portrait, Facebook Portrait
16:9YouTube Video, YouTube Thumbnail, Facebook Group Cover
9:16Instagram Story/Reel, TikTok Video, YouTube Short
2:3Pinterest Standard Pin, Pinterest Carousel
1.91:1Facebook Link Share, X Card, LinkedIn Post
3:1X Header, Bluesky Banner, Mastodon Header
4:1LinkedIn Background

How to use this tool

  1. Enter the width and height of your image or video in pixels.
  2. See the calculated aspect ratio and decimal value instantly.
  3. Check the visual preview to see the proportions.
  4. Review the platform compatibility section to see which social media formats match your ratio.
  5. Need to resize? Create a free BulkPublish account to manage and publish your media across all platforms.