# CSS corner radius maker

Canonical page: https://nepocore.com/tools/border-radius/

Adjust the four corner radii of a preview card independently. Copy a CSS border-radius declaration in the correct clockwise order.

## How to use it

1. Enter a sample value, color, URL or structured input.
2. Choose the required format or options and run the tool.
3. Review the output and copy it into your own workflow.

## Example

Create a card with a large top-left corner and smaller corners on the other three edges.

## Limits and checks

Preview dimensions affect the visible curve. This tool uses pixel corner radii rather than percentage-based elliptical shapes.

## Access and processing

Free to use without an account. Interactive processing requires JavaScript in a modern browser. Input is processed in the browser rather than sent to a processing server. Optional browser storage is not a synchronized account.


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