How to use this aspect ratio calculator
Enter any pixel width and height, or choose a social preset. Toolpane simplifies the ratio with the greatest common divisor,
shows the CSS aspect-ratio property value, and lists common scaled sizes that keep the same proportions.
Popular social aspect ratios
- YouTube / Twitch: 16:9 (1920×1080)
- YouTube Shorts, TikTok, IG Reels & Stories: 9:16 (1080×1920)
- Instagram Feed (square): 1:1 (1080×1080)
- Instagram Feed (portrait): 4:5 (1080×1350)
- Twitter / X landscape: 16:9 (1600×900)
- LinkedIn / Facebook link preview: ~1.91:1 (1200×627 / 1200×630)
- Pinterest pin: 2:3 (1000×1500)
CSS tip
Use the copied value with aspect-ratio: 16 / 9; on a container so it keeps proportions without a fixed height.
Pair with object-fit: cover on images or video for clean crops.