🔘 Border Radius Visualizer
Professional border-radius generator with live preview. Adjust individual corner radius values using intuitive sliders, see real-time visual changes, and generate clean CSS code. Perfect for web designers and developers creating modern rounded interfaces.
Border Radius Preview:
Interactive CSS Border Radius Generator
Adjust corner sliders → See preview → Copy CSS
🎨 Interactive Border Radius Editor
Corner Radius Values (px)
Live Preview (200×200px)
Element
💻 Generated CSS Code
border-radius: 15px 25px 20px 10px;
}
🎯 Quick Presets
💡 Usage Tips
- Border-radius values go clockwise: top-left, top-right, bottom-right, bottom-left
- Use percentage values for responsive rounded corners
- Large radius values create more dramatic rounding effects
- Copy CSS and apply to any HTML element
How to Use This Border Radius Visualizer
How to Use the Border Radius Visualizer
Step 1: Choose Your Approach
Select a corner radius preset (uniform, rounded, pill, asymmetric) or choose "Custom" for individual corner control. Custom mode gives you the most flexibility for unique designs.
Step 2: Adjust Corner Values
Use the interactive controls to set border radius values:
- Custom Mode: Use individual sliders for each corner (top-left, top-right, bottom-right, bottom-left)
- Preset Modes: Fine-tune the preset values with the provided controls
- Live Preview: Watch your changes update instantly on the preview element
Step 3: Preview Different Sizes
Test your border radius with different element dimensions to ensure it looks good across various use cases. Choose from square, rectangle, large, or small preview sizes.
Step 4: Generate and Copy CSS
Select your preferred CSS output format (standard, webkit-prefixed, or complete) and copy the generated code to use in your projects.
💡 Pro Tips
- Border-radius values follow clockwise order: top-left, top-right, bottom-right, bottom-left
- Use percentage values (like 50%) for responsive circular elements
- Subtle rounded corners (4-8px) work well for modern UI elements
- Large radius values create dramatic rounding effects for creative designs
How It Works
How the Border Radius Visualizer Works
🎨 Interactive Visual Editor
The tool uses range sliders and number inputs to provide precise control over each corner's border radius value. Real-time JavaScript updates ensure immediate visual feedback as you adjust values.
📐 CSS Border Radius Property
The CSS border-radius property can take 1-4 values following clockwise order: top-left, top-right, bottom-right, bottom-left. Our tool visualizes exactly how these values affect each corner of an element.
🔄 Live Preview System
Changes to radius values instantly update the preview element, allowing you to see exactly how your border radius will look. Multiple preview sizes help test responsiveness and visual impact.
🌐 Cross-browser Compatibility
Generated CSS includes standard border-radius and optional -webkit-border-radius prefix for older browser compatibility. The tool generates clean, production-ready code.
Key Benefits
- Visual Design: See your changes instantly instead of guessing pixel values
- Precise Control: Individual corner adjustment for complex rounded designs
- Responsive Testing: Preview different element sizes to ensure visual consistency
- Clean Output: Production-ready CSS with proper browser compatibility
When You Might Need This
- • Web designers creating modern button styles with perfectly rounded corners for user interfaces
- • Frontend developers building card-based layouts with consistent border radius across components
- • Mobile app designers prototyping rounded interface elements and custom button shapes
- • E-commerce websites styling product cards, image containers, and checkout button designs
- • SaaS platforms creating dashboard components with professional rounded corner aesthetics
- • Landing page developers designing call-to-action buttons with optimized visual appeal
- • Design system creators establishing consistent border radius values across component libraries
- • CSS framework builders defining reusable rounded corner classes for responsive design
- • UI component libraries standardizing border radius values for buttons, inputs, and containers
- • Creative agencies experimenting with asymmetric corner designs for unique visual branding
Frequently Asked Questions
What's the difference between px and % values for border-radius?
Pixel values (px) create fixed rounded corners that stay the same size regardless of element dimensions. Percentage values (%) create responsive corners that scale with the element - 50% creates a perfect circle or pill shape, while smaller percentages create proportional rounding.
How do I create a perfect circle using border-radius?
To create a perfect circle, set border-radius to 50% and ensure your element has equal width and height dimensions. For example: border-radius: 50% on a 100px × 100px element creates a perfect circle.
Can I animate border-radius changes with CSS transitions?
Yes! Border-radius is animatable with CSS transitions and animations. Add 'transition: border-radius 0.3s ease' to smoothly animate between different radius values. This creates polished hover effects and dynamic UI interactions.
What's the clockwise order for border-radius corner values?
Border-radius values follow clockwise order starting from top-left: top-left, top-right, bottom-right, bottom-left. You can use 1-4 values: one value (all corners), two values (top-left/bottom-right, top-right/bottom-left), three values (top-left, top-right/bottom-left, bottom-right), or four values (individual corners).
Do large border-radius values work on small elements?
When border-radius values exceed half the element's width or height, the browser automatically constrains them to create the maximum possible rounding. This means you can use large values safely - the browser will create the most rounded corner possible without breaking the layout.