CSS Border Radius Generator

What Is a CSS Border Radius Generator?

A CSS Border Radius Generator is an online tool for creating the CSS border-radius property without having to manually calculate or test individual corner values. It provides separate controls for the top-left, top-right, bottom-right and bottom-left corners and displays the resulting shape in real time.

The generated CSS can be copied directly into a stylesheet or an element's inline style. This makes the tool useful when designing cards, buttons, containers, images, navigation elements and other interface components that require rounded corners.

Why Use the CSS Border Radius Generator?

The generator provides a quick way to experiment with CSS corner rounding and produce a precise border-radius declaration.

How to Use the CSS Border Radius Generator

Use the controls to create the exact corner shape you need and then copy the generated CSS.

1. Adjust the corners — Use the sliders or number fields to set the radius for each corner.
2. Choose a preset — Select a preset if you want to apply a common radius value to all four corners.
3. Check the preview — The preview updates automatically so you can inspect the resulting shape.
4. Copy the CSS — Select Copy CSS to copy the generated border-radius declaration to your clipboard.

Generate CSS Border Radius Code Online

The CSS border-radius property is used to round the corners of an HTML element. A single value applies the same radius to all four corners, while multiple values can be used to create different corner shapes. This generator provides a visual way to create those values and immediately see the result.

For example, a declaration such as border-radius: 20px; applies a 20-pixel radius to every corner. When individual corner values are required, CSS can use four values in clockwise order: top-left, top-right, bottom-right and bottom-left.

Creating Rounded Corners with CSS

Rounded corners are commonly used for cards, buttons, form fields, images, panels and other interface components. Small radius values can create subtle rounding, while larger values produce more pronounced curves. The appropriate value depends on the dimensions and visual design of the element.

Using Different Radius Values

Individual corner values are useful when a design requires an asymmetric shape. For example, the top-left and bottom-right corners can use one value while the other two corners use another. The generator makes these combinations easier to test before adding the CSS to a project.

CSS Border Radius Values and Compatibility

The generated CSS uses the standard border-radius property and pixel values. CSS border radius is supported by modern web browsers and can be used with most HTML elements that have a visible box.

The preview is intended to demonstrate the effect of the generated values. The final appearance can differ depending on the dimensions, borders, backgrounds, padding and other CSS properties applied to the element in your own project. For a perfect circle, the element should have equal width and height and use a sufficiently large radius such as 50%.

Frequently Asked Questions