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CSS Border Radius Generator — Visual Builder

Tweak border-radius for each corner with sliders, see live preview, copy ready CSS.

20px
20px
20px
20px
border-radius: 20px;

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About this tool

Rounded corners, dialed in

Drag the corner controls and copy the exact border-radius CSS — round all four corners evenly or each one independently.

Quick shapes

  • Circle50% on a square element.
  • Pill button — a large value like 9999px.
  • Soft card8–16px for a friendly, modern look.

Copy-paste ready and free for any project.

How to use the CSS Border Radius Generator

Takes about a minute. No signup, no download, your data stays in your browser.

  1. 1
    Open the tool. Scroll up to the CSS Border Radius Generator above — it loads instantly in your browser, no install needed.
  2. 2
    Enter your values. The fields come pre-filled with realistic defaults so you can see how it works — replace them with your own numbers.
  3. 3
    Read the result. The output updates instantly. Copy or share it — nothing is uploaded to a server, everything stays on your device.

Frequently asked questions

Common questions about the CSS Border Radius Generator.

How do I create rounded corners in CSS?

Drag the corner sliders to taste and copy the generated `border-radius` value into your CSS.

How do I round only some corners?

Set each corner independently — for example round just the top two.

How do I make a circle or pill shape?

Use 50% on a square for a circle, or a large value like 9999px for a pill button.

Is the generated CSS free to use?

Yes — copy and paste it into any project.

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