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Border Radius Generator

Design CSS border-radius with four independent corner controls. Copy the exact rule or the full 8-value shorthand.

Updated April 2026
CSS
border-radius: 16px;

What it does

Design CSS border-radius with four independent corner controls and live preview. Copy the short form (8px), per-corner (8px 16px 8px 16px), or full 8-value elliptical form — exactly the CSS you'll paste.

Pair with box shadow generator, gradient generator, and CSS clamp generator.

How to use it

  1. Drag the corner sliders to shape the rectangle.
  2. Toggle unified vs per-corner modes.
  3. Switch between px, %, and em units.
  4. Copy the CSS rule.