CSS Aspect Ratio Generator

📖 How to Use

This CSS Aspect Ratio Generator helps you visually create CSS aspect-ratio property code. Select a common ratio from presets (16:9, 4:3, 1:1, etc.) or enter a custom ratio.

Click "Apply" to see the live preview and get the corresponding CSS code. One-click copy for direct use in your projects.

What is aspect-ratio?

The CSS aspect-ratio property forces an element to maintain a specified width-to-height ratio. When the element width changes, the height auto-adjusts to preserve the ratio. Perfect for responsive images, video containers, and UI components.

🎯 Use Cases

• Responsive Image Containers: Maintain consistent image ratios across screen sizes
• Video Embeds: Keep YouTube/Vimeo iframes at 16:9 ratio
• UI Components: Cards, avatars, icons requiring fixed proportions
• Ad Slots: Prevent layout shifts by maintaining ad container ratios

❓ FAQ

How is aspect-ratio different from the padding-top hack?

Developers traditionally used padding-top: 56.25% (9/16) to simulate aspect ratio. The aspect-ratio property is more intuitive, concise, and doesn't need extra nested elements. Modern browsers widely support it.

Browser support?

CSS aspect-ratio is supported in Chrome 88+, Firefox 87+, Safari 15+, and Edge 88+. The code generated here works in all modern browsers.