CSS Border Radius Generator

Create perfect border radius CSS visually. Preview changes in real-time and gene...

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Updated

Quick Presets

Corner Controls

Live Preview

Preview

All corners: 8px

Generated CSS

.element {
  border-radius: 8px;
}
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Generator Features

Individual Corner Control - Adjust each corner independently with sliders and number inputs
4 Unit Types - Support for px, em, rem, and percentage units
8 Shape Presets - None, Small, Medium, Large, Circle, Pill, Leaf, Asymmetric
Live Preview - Real-time visual preview of your border radius
Smart Output - Optimized shorthand when all corners are equal
Clean CSS - Production-ready CSS code ready to paste

Why Use CSS Border Radius Generator?

Visual Corner Editor

Adjust each corner individually with sliders and number inputs for precise control.

Real-Time Preview

See your border-radius changes instantly on a live preview element.

Quick Presets

Start with popular shapes like Circle, Pill, Leaf, and more - then customize.

Multiple Units

Switch between px, em, rem, and % units for responsive or fixed sizing.

Clean CSS Output

Generates optimized shorthand CSS - uses single value when all corners are equal.

100% Client-Side

Runs entirely in your browser. No server calls, no data collection.

Common Uses for Border Radius

Buttons & CTAs

Create rounded buttons and call-to-action elements with consistent border radius.

Image Styling

Round image corners or create circular avatar images with border-radius.

Card Components

Design card layouts with smooth rounded corners for modern UI patterns.

Container Design

Style modal dialogs, tooltips, and overlay containers with rounded edges.

How It Works

1

Choose a Preset or Customize

Start with a quick preset like Small, Medium, Circle, or customize each corner individually using the sliders and inputs.

2

Select Your Unit

Choose between pixels (px), em, rem, or percentage (%) units. Percentages create responsive rounded corners that scale with the element.

3

Copy the CSS

Once satisfied with your border radius, copy the generated CSS code and paste it into your stylesheet.

Border Radius Tips

Use 50% for Circles

Set border-radius to 50% on a square element to create a perfect circle. This works regardless of the element's size.

Pill-Shaped Buttons

Use a very large pixel value (like 9999px) to create pill-shaped buttons that work at any width.

Percentage Behavior

When using percentages on non-square elements, each corner becomes elliptical. This can create unexpected shapes on rectangles.

Frequently Asked Questions

CSS border-radius is a property that rounds the corners of an element's outer border edge. You can create rounded corners on any HTML element like buttons, images, divs, and more. The value specifies the radius of the corner circle.
Yes! You can specify different values for each corner using the shorthand syntax: border-radius: top-left top-right bottom-right bottom-left. You can also use the individual properties like border-top-left-radius for precise control.
To create a perfect circle, set border-radius to 50% on an element that has equal width and height. This creates a circular shape from a square element. For example: width: 200px; height: 200px; border-radius: 50%;
CSS border-radius supports multiple units: pixels (px) for fixed sizes, em/rem for responsive sizing relative to font size, and percentages (%) for responsive sizing relative to element dimensions. Percentages are particularly useful for creating elliptical shapes.
Use the slash syntax to create elliptical corners: border-radius: 50px / 100px. The first value controls the horizontal radius, and the second value (after the slash) controls the vertical radius. This creates an oval-shaped corner.
Yes, border-radius has excellent browser support and works in all modern browsers including Chrome, Firefox, Safari, Edge, and Internet Explorer 9+. For older browsers, corners will simply appear square as a fallback.
Yes, you can animate border-radius values smoothly using CSS transitions or animations. Modern browsers handle these animations efficiently. Just ensure both the starting and ending values use the same unit type.
In most modern browsers, the click/touch area is clipped to the border-box shape, meaning clicks outside the visible rounded corners won't trigger the element. However, this behavior may vary slightly across browsers and older versions.

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