Aspect Ratio
OR
Screen, Image & Video Aspect Ratios
The aspect ratio of an image describes the proportional relationship between its width and its height. It is commonly expressed as two numbers separated by a colon, as in 16:9.
Common Standards
- 16:9 (1.77:1): Standard Widescreen (HDTV, YouTube).
- 4:3 (1.33:1): Old CRT TVs, SD Broadcast, iPad.
- 21:9 (2.35:1): Ultra-Widescreen, CinemaScope movies.
- 1:1: Square (Instagram feed).
- 9:16: Vertical Video (TikTok, Reels, Shorts).
FAQ
Does resolution affect aspect ratio?
No. 1920x1080 (1080p) and 3840x2160 (4K) are both 16:9. Aspect ratio is about shape, not size.