Border Radius Generator — Free Online Tool
Create CSS rounded corners with live preview and instant code generation.
Border Radius Controls
Preview
About Border Radius Generator
The Border Radius Generator creates CSS border-radius code with a live visual preview. Adjust all corners together or customize each corner individually using intuitive sliders.
Perfect for creating rounded boxes, cards, buttons, and even circles. See changes in real-time and copy the generated CSS code instantly for use in your projects.
How to Use Border Radius Generator
- Toggle between 'All Corners' or 'Individual Corners' mode.
- Adjust the sliders to set corner roundness (0-200px).
- Watch the live preview update instantly.
- Copy the generated CSS code to your clipboard.
Key Features
Live border preview
All corners or individual corner control
Slider range 0-200px
Visual preview box
One-click CSS copy
Responsive controls
100% client-side
Clean CSS output
Frequently Asked Questions
What is border-radius in CSS?
Border-radius rounds the corners of an element's border. You can set all corners at once or customize each corner individually.
How do I create different corner radii?
Use the individual corner sliders to set different values for top-left, top-right, bottom-right, and bottom-left corners.
What's the difference between pixels and percentages?
Pixels give fixed corner sizes. Percentages create proportional corners (50% creates a circle from a square).
Can I create elliptical corners?
Yes! Border-radius supports elliptical corners using two values (horizontal/vertical radius), though this tool focuses on circular corners.
How do I make a perfect circle?
Set border-radius to 50% on a square element. The preview shows this when all corners are set to maximum.