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Tune top-left, top-right, bottom-right, and bottom-left radii with a live preview, then copy a border-radius declaration for your UI components.
How to use this tool
Adjust the four corner sliders and copy the CSS when the preview looks right.
Worked example
Uniform 16px corners for a card.
How it works
Control each corner radius independently and copy a border-radius declaration for your UI components.
Limitations
Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.
Privacy and file handling
Your data stays on your device and is not uploaded.
FAQ
Frequently asked questions
Is Border Radius Generator free?
Yes. It is free to use and you do not need to sign in or create an account.
Is my data private?
See the privacy note on this page. Many tools run on your device; some heavier file tools may use secure temporary processing when required.
Can I use Border Radius Generator on mobile?
Yes. Open this page on your phone or tablet, enter your inputs, and use the on-screen controls.
Related pages
- Browse all free online tools on Utilnivo
- Explore more developer tools on Utilnivo
- Box Shadow Generator — Design CSS box shadows with live preview and copy-ready code.
- Gradient Generator — Create CSS linear gradients with angle and color controls.
- Flexbox Visualizer — Explore CSS flexbox alignment with a live item preview.
- CSS Formatter and Minifier — Pretty-print or minify CSS in one panel—switch Format and Minify anytime.
- HTML CSS JS Playground — Try HTML, CSS, and JavaScript snippets in a sandboxed preview.
- JSON Formatter — Format, minify, and validate JSON with optional key sorting.
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