📐 Aspect Ratio Resizer

Calculate pixel dimensions while locking exact aspect ratios (16:9 widescreen, 9:16 vertical TikTok/Shorts, 4:3 classic, 1:1 square, 21:9 cinema). Generates modern CSS `aspect-ratio` code snippets.

Width (Pixels):

Height (Pixels):

1920 × 1080 (16:9)

aspect-ratio: 16 / 9;