CSS Aspect Ratio Generator
Set common aspect ratios (16:9, 4:3, 1:1...) or your own custom ratio — perfect for responsive media containers.
Aspect Ratio Presets
Custom
100% browser-based — no data sent to any server
16:9
Set common aspect ratios (16:9, 4:3, 1:1...) or your own custom ratio — perfect for responsive media containers.