CSS clamp() Fluid Size Generator

Generate fluid responsive clamp() values for typography and spacing.

Free · Runs in your browser · Last updated 2026-05-03

Min size (px) Max size (px) Min viewport (px) Max viewport (px) Root font size (px)

Generated CSS

Live preview — resize the window to see fluid scaling.

About this tool

Compute the perfect CSS clamp(min, preferred, max) for fluid typography between two viewport widths. Copy ready-to-use CSS.

Privacy

All processing for CSS clamp() happens locally inside your browser using JavaScript. Your input is never uploaded to a server, logged, or shared with third parties.

Frequently asked questions

Is the CSS clamp() free to use?

Yes. CSS clamp() is completely free for both personal and commercial projects. There are no usage limits, no sign-up, and no premium tier.

Is my data safe when I use CSS clamp()?

All processing happens locally in your browser using JavaScript. Your input is never uploaded to our servers, logged, or shared with any third party.

Does CSS clamp() work offline?

Once the page has loaded, the tool runs entirely client-side. You can disconnect from the internet and it will keep working in the same browser tab.

Which browsers are supported?

CSS clamp() works in all modern browsers, including the latest versions of Chrome, Firefox, Safari, Edge, Brave, and Opera, on desktop and mobile.

Do I need to install anything?

No. CSS clamp() runs in any modern web browser with no installation, browser extension, or account required.

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