Calculate, simplify, and scale aspect ratios for any screen or image.
Everything runs in your browser — nothing is uploaded or stored on any server.
Type width and height — the aspect ratio calculates instantly.
Simplified ratio (e.g. 16:9), decimal, and height % all shown.
Enter a new width or height and the other dimension auto-fills.
Quick buttons for 16:9, 4:3, 1:1, 9:16, and more common ratios.
Built for real work — no subscriptions, no watermarks, no surprises.
Find or confirm ratios for YouTube, TikTok, and cinema formats.
Maintain proportions when resizing logos, images, and layouts.
Get exact dimensions for Instagram, Twitter, and LinkedIn formats.
Enter one dimension and the other fills in automatically.
One-click presets for the most common aspect ratios.
No sign-up, no limits.