Border Radius Generator
Build custom border radiuses with individual corner controls, percentage vs pixel adjustments, and shorthand preview.
Radius Options
What is a Border Radius in CSS?
The border-radius CSS property rounds the corners of an element's outer border edge. It can take single pixel bounds or complex 8-point percentage curves.
Why Use a CSS Border Radius?
Rounded corners soften the structure of layouts, making card grids, buttons, and badges look modern, organic, and friendly. It is essential for premium Figma-like card templates.
CSS Syntax & Controls
You can specify a single radius for all four corners, individual values for each corner, or two values per corner (separated by a slash) to create elliptical curves.
border-radius: <top-left> <top-right> <bottom-right> <bottom-left>;Best Practices
- Align inner child elements' border-radii to be slightly smaller than the outer container for perfect geometric harmony.
- Use percentages (50%) to construct perfect circles for avatars.
- Leverage the 8-point syntax to build beautiful organic liquid shape backgrounds.
Common Mistakes
- Making inner element radii larger than outer container radii, causing overlapping corners.
- Applying heavy roundness on dense layout grids, which wastes screen space.
Step-by-Step Guide: How to Use this Generator
- Adjust individual corner sliders to round specific sides of the box.
- Toggle 'Organic Mode' to access the advanced 8-point syntax.
- Randomize values to find unique shape designs, then copy the generated shorthand.
Browser Compatibility
| Chrome | Safari | Firefox | Edge |
|---|---|---|---|
| Yes (Full) | Yes (Full) | Yes (Full) | Yes (Full) |
Frequently Asked Questions (FAQ)
How do I create a perfect circle using CSS?
Ensure your element has equal width and height, then set border-radius to 50%.
What does the slash (/) syntax do in border-radius?
It separates horizontal radii from vertical radii, allowing you to create custom elliptical corners instead of standard circular ones.