Border Radius Generator
8-value syntax + pill presets.
How to use
Enter Radius into Border Radius Generator and press Run — or just type, live results update as you edit. DesignMatrix computes the answer instantly with a pure JavaScript engine (Web Worker for heavy inputs) on this page. Nothing is sent anywhere: no signup, no server round-trip, same inputs always give same outputs.
Steps
- Open the tool below (or scroll to the interactive Border Radius Generator).
- Enter Radius.
- Press Run (Ctrl+Enter) — or keep typing for live results.
- Copy the answer, download it, or share the link.
FAQ
Is Border Radius Generator really free?
Yes — free with no signup, no credits and no limits on this tool. It is supported by clearly labeled ads placed away from the buttons, never by paywalls.
Is anything I type into Border Radius Generator sent to a server?
No. Every keystroke is computed with a pure JavaScript engine (Web Worker for heavy inputs) inside this page. Close the tab and your data is gone — unless you explicitly download or share it.
What should I enter in "Radius"?
Put your radius here — for example: 16px 24px 16px 24px. Leave the defaults first to see how it works, then adjust. Every field is validated with a plain-language message if something is off.
I normally use HTMLColorCodes — why switch?
If you are tired of pretty pickers that stop before the real work: contrast checks, tokens and export, DesignMatrix is the alternative: a full pipeline: convert, contrast-check, harmonize, then export CSS and Tailwind locally.
How accurate is Border Radius Generator?
Everything runs on your device, so results are instant and repeatable — same inputs, same outputs, no server involved.
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Free alternative
Free alternative to Coolors and HTMLColorCodes for colors, palettes and CSS generation — a full pipeline: convert, contrast-check, harmonize, then export CSS and Tailwind locally. Coolors vs HTMLColorCodes vs DesignMatrix.
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