What is the slash in border-radius for?

Values before the slash are horizontal radii and values after it are vertical radii, which is how elliptical corners and blob shapes are defined.

Should I use percentages or pixels?

Pixels keep the corner consistent at any size; percentages scale with the element, which is what you want for circles and blobs.

How do I make a perfect circle?

Set a fixed equal width and height and use border-radius: 50%.

Free CSS Border Radius Generator Online - Fast & Private Web Utility

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Shape corners visually and copy the border-radius CSS.

Runs entirely in your browser - your files are never uploaded

Quick Overview & Key Specifications

What is CSS Border Radius Generator?

CSS Border Radius Generator is a free, web-based utility designed for instant, local css tools tasks. It allows users to compute, format, convert, or edit data directly in their browser without installing software or registering an account.

100% Free & Unlimited Usage
0% File Uploads (100% Client-Side Privacy)
Instant Real-Time Calculations
Mobile, Tablet & Desktop Compatible

How to use CSS Border Radius Generator

Select or Enter Input

Provide your source file or type your values into CSS Border Radius Generator.

Configure Settings

Adjust parameters, formatting options, or units in real-time.

Get Instant Output

Download the final processed file or copy the generated output.

Features & Overview of CSS Border Radius Generator

Adjust all four corners together, or unlock them to set each one independently. Switch on elliptical mode to control horizontal and vertical radii separately and you can shape the smooth organic blobs used across modern landing pages.

The preview scales with the values you choose so you always see the real shape, and the generated declaration uses shorthand wherever it is valid to keep your CSS tidy.

Frequently Asked Questions about CSS Border Radius Generator

Answers to common questions regarding CSS Border Radius Generator features, data privacy, and usage.

Free CSS Border Radius Generator Online - Fast & Private Web Utility

What is CSS Border Radius Generator?

How to use CSS Border Radius Generator

Select or Enter Input

Configure Settings

Get Instant Output

Features & Overview of CSS Border Radius Generator

Frequently Asked Questions about CSS Border Radius Generator

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