CSS Border Radius Generator

Create perfect rounded corners for your web elements with our free online CSS border radius generator. Generate border-radius CSS code with live preview instantly.

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Free Online CSS Border Radius Generator

Our CSS border radius generator is a powerful, free tool that helps you create rounded corners for your web elements. Whether you're designing buttons, cards, images, or any other HTML element, this tool provides an intuitive interface to generate perfect border-radius CSS code with live preview.

Key Features

  • Individual Corner Control: Adjust each corner (top-left, top-right, bottom-right, bottom-left) independently or set them all at once
  • Live Preview: See your rounded corners in real-time as you adjust the values
  • Preset Shapes: Choose from 20+ preset shapes including circles, pills, and custom rounded designs
  • Instant CSS Code: Copy the generated CSS code with one click
  • No Registration Required: Use the generator instantly without signing up or creating an account
  • Mobile Friendly: Works seamlessly on desktop, tablet, and mobile devices
  • Privacy Focused: All processing is done in your browser - no data is sent to servers

How to Use the CSS Border Radius Generator

Using our border radius generator is straightforward:

  1. Adjust the four corner values using the number inputs (corner-1, corner-2, corner-3, corner-4)
  2. Watch the live preview update in real-time as you change the values
  3. Or choose from preset shapes by clicking on any of the shape buttons
  4. Each preset will automatically set the appropriate border-radius values
  5. Click the "Copy Code" button to copy the generated CSS code
  6. Paste the code into your stylesheet or inline style attribute

Understanding CSS Border Radius

The CSS border-radius property allows you to create rounded corners on any HTML element. It's a shorthand property that can accept one to four values:

  • One value: border-radius: 10px; - Applies the same radius to all four corners
  • Two values: border-radius: 10px 20px; - First value for top-left and bottom-right, second for top-right and bottom-left
  • Three values: border-radius: 10px 20px 30px; - First for top-left, second for top-right and bottom-left, third for bottom-right
  • Four values: border-radius: 10px 20px 30px 40px; - Top-left, top-right, bottom-right, bottom-left (clockwise)

Common Use Cases

CSS border radius is versatile and can be used in many ways:

  • Buttons: Create modern, rounded buttons with smooth corners
  • Cards and Containers: Add subtle rounded corners to card designs
  • Images: Round the corners of images for a softer, more polished look
  • Input Fields: Style form inputs with rounded corners
  • Badges and Tags: Create pill-shaped badges with high border-radius values
  • Modal Windows: Add rounded corners to popup modals and dialogs
  • Profile Pictures: Create circular avatars using 50% border-radius
  • Navigation Elements: Style menu items and navigation bars with rounded corners

CSS Border Radius Syntax

The generated CSS follows standard CSS border-radius syntax:

  • Shorthand: border-radius: 10px; or border-radius: 10px 20px 30px 40px;
  • Individual Properties: You can also use individual corner properties:
    • border-top-left-radius: 10px;
    • border-top-right-radius: 10px;
    • border-bottom-right-radius: 10px;
    • border-bottom-left-radius: 10px;
  • Percentage Values: You can use percentages (e.g., 50% for perfect circles)
  • Elliptical Corners: Use two values per corner for elliptical shapes (e.g., border-radius: 10px / 20px;)

Tips for Using Border Radius

  • Consistency: Use consistent border-radius values across similar elements for a cohesive design
  • Subtle vs. Bold: Small values (2-8px) create subtle rounding, while larger values (20px+) create more dramatic effects
  • Perfect Circles: Use border-radius: 50% on square elements to create perfect circles
  • Pill Shapes: Use a border-radius value equal to half the element's height for pill-shaped buttons
  • Performance: Border-radius is hardware-accelerated in modern browsers and has minimal performance impact
  • Browser Support: Border-radius is supported in all modern browsers, including IE9+
  • Combining with Other Properties: Border-radius works well with box-shadow, gradients, and transforms

Browser Compatibility

CSS border-radius is supported in all modern web browsers including Chrome, Firefox, Safari, Edge, and Opera. It has been supported since CSS3 and is widely used in modern web design. For older browsers like IE8 and below, you may need to use vendor prefixes or provide fallback designs.

Privacy and Security

Your privacy is important to us. This CSS border radius generator processes all operations entirely in your browser. No data, values, or personal information is collected, stored, or transmitted. You can use this tool with complete confidence and privacy.

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