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Border Radius CSS Generator - Online Rounded Corners Tool

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Border Radius CSS Generator

Easily create rounded corners for your elements visually.

All Corners 
border-radius: 0;

Frequently Asked Questions

The border-radius CSS property rounds the corners of an element's outer border edge. You can set one radius to all corners or different values for each corner.

Set border-radius: 50%; and ensure the element has equal width and height (a square). This generator's Round preset does exactly that.

Pixels (px) give fixed radius sizes. Percentages (%) are relative to the element's dimensions, which is useful for responsive shapes like ellipses or circles.

Yes, click the unlink button to control top‑left, top‑right, bottom‑right, and bottom‑left independently. The CSS will output four values.

Use a very large pixel value (e.g., 999px) so the corners become completely rounded regardless of the element height. Our Pill preset does this instantly.

Yes, border-radius is supported in all modern browsers, including Chrome, Firefox, Safari, and Edge. Older IE versions (IE 8 and below) don’t support it.
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