HTML & CSS ToolsTool Review

CSS Border Radius Generator

Provided by10015 Tools10015.io

Independently adjust each corner's border-radius to design custom rounded shapes, with live preview of the result.

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About this tool

What CSS Border Radius Generator does

The CSS Border Radius Generator on 10015 Tools is a web utility that calculates CSS code for rounded corners. Users can independently adjust the radius for each of the four corners—top-left, top-right, bottom-right, and bottom-left—using input fields. The tool provides a live preview window that updates in real time as values change, allowing designers and developers to visualize the resulting shape from subtly softened edges to fully pill-shaped or complex custom geometry without manual calculation. The generated CSS snippet can then be copied and applied to HTML elements.

Step by step

How to use the 10015 Tools CSS Border Radius Generator

  1. 1

    Open the CSS Border Radius Generator on 10015 Tools

  2. 2

    Enter numeric values for the top-left, top-right, bottom-right, and bottom-left corners

  3. 3

    Watch the live preview update to see the rounded shape form

  4. 4

    Copy the generated CSS code from the output field

Is it right for you

Best for

Front-end designers and web developers who need to quickly generate precise CSS border-radius values for HTML elements without manual calculation or trial and error.

Limitations

  • No unit switching between pixels, ems, or percentages
  • Live preview may not reflect complex responsive behaviors
  • Results are visual estimates rather than validated production code
Questions

CSS Border Radius Generator FAQ

Can I use this tool to create pill-shaped buttons?
Yes, by setting equal radius values for all four corners, the generator can produce fully rounded, pill-shaped corners suitable for buttons or badges.
Does the tool support responsive units like percentages or ems?
The material indicates the tool accepts various dimensions, but does not specify support for unit switching beyond standard numeric input.
Is the generated CSS code ready to paste into a stylesheet?
The tool outputs CSS properties that can be copied and directly applied to HTML elements via style attributes or stylesheet rules.
What if I want different radii on each corner?
The generator allows independent adjustment of each corner's radius, enabling custom shapes from subtle rounding to complex geometric forms.
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