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CSS Border Radius Generator

· Last updated：2025-01-22

Generate CSS border-radius properties

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Written by the Elysia Tools team
HTML/CSS86
CSS48

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category
Design
Input types
checkbox, range
Output type
text
Sample coverage
4
API ready
Yes

Overview

The CSS Border Radius Generator allows you to quickly create and preview custom corner rounding for your web elements. Simply adjust the sliders for each corner to generate precise CSS code ready for your stylesheet.

When to use

  • When you need to create consistent rounded corners for UI components like buttons or cards.
  • When you want to experiment with asymmetrical corner shapes for unique design layouts.
  • When you need to quickly generate the exact CSS syntax for a specific border-radius configuration.

How it works

  1. 1Adjust the individual sliders for Top-Left, Top-Right, Bottom-Right, and Bottom-Left corners to set your desired pixel values.
  2. 2Enable the 'Uniform Radius' option to lock all corners to the same value for symmetrical styling.
  3. 3Copy the generated CSS property directly from the output box to paste into your project's CSS file.

Use cases

  • Styling modern card components with subtle rounded corners.
  • Creating pill-shaped buttons for call-to-action sections.
  • Designing unique, asymmetrical shapes for decorative image containers.

Examples

1. Standard Card Styling

Frontend Developer

Background

Building a clean dashboard interface where all content cards require a consistent, soft rounded look.

Problem

Manually calculating and typing out the border-radius shorthand for multiple elements is tedious.

How to use

Check 'Uniform Radius' and set the slider to 12px.

uniform: true, topLeft: 12, topRight: 12, bottomRight: 12, bottomLeft: 12

Outcome

Generates 'border-radius: 12px;' for immediate implementation.

2. Asymmetrical Hero Image

UI Designer

Background

Creating a hero section with a stylized image that has rounded corners only on the top-left and bottom-right.

Problem

Need to visualize and generate the specific CSS syntax for complex corner rounding.

How to use

Uncheck 'Uniform Radius' and adjust individual sliders to create a diagonal rounding effect.

uniform: false, topLeft: 50, topRight: 0, bottomRight: 50, bottomLeft: 0

FAQ

Can I set different values for each corner?

Yes, by disabling the 'Uniform Radius' checkbox, you can independently adjust each of the four corners.

What is the maximum radius I can set?

You can set a radius value between 0px and 100px for each corner.

Does this tool generate shorthand CSS?

Yes, the tool provides the standard border-radius CSS property based on your selected values.

Is the generated code compatible with all browsers?

Yes, the border-radius property is supported by all modern web browsers.

Can I use percentages instead of pixels?

This specific tool is optimized for pixel-based values to ensure precise control over corner rounding.

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Generates 'border-radius: 50px 0px 50px 0px;' for a custom design element.