Aspect Ratio Calculator

Find simplified ratios, calculate missing dimensions, resize proportionally, and explore social media presets — all instantly.

Visual Preview

16:9

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Social Media Presets

Click any platform preset to populate the calculator instantly.

YouTube

Instagram

TikTok

Twitter/X

Facebook

LinkedIn

Detect from Image

Upload or drop any image to read its exact dimensions and aspect ratio.

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PNG, JPG, WebP, GIF — any image format

Popular Guides

Short walkthroughs for the most common aspect ratio convert questions.

16 to 9 Ratio CalculatorImage Aspect Ratio Calculator Guide

Common Aspect Ratios Reference

The most widely used ratios across video, photography, and digital media.

RatioDecimalCommon Uses
16:91.78HD video, YouTube, presentations, monitors
4:31.33Traditional TV, older monitors, iPad video
3:21.50DSLR / mirrorless photos, 35mm film
1:11.00Instagram square post, profile photos, icons
9:160.56TikTok, Instagram Reels / Stories, YouTube Shorts
21:92.33Ultrawide monitors, cinematic films
2:12.00Wide landscape photography, dual-monitor setups
1.91:11.91Facebook & LinkedIn posts, Open Graph images
4:50.80Instagram portrait post, mobile-friendly vertical
5:41.25Medium format photography, some monitors