Aspect Ratio Calculator
Find the aspect ratio of any size, or calculate a missing width or height for 16:9, 4:3, 1:1, 9:16 and more.
How to use
- Enter a size to see its ratio, or pick a ratio to calculate a matching width or height.
FAQ
Which ratio for social video?
9:16 for Reels, TikTok and Shorts; 16:9 for YouTube; 4:5 for Instagram feed posts.