Clamp Generator

CSS clamp() Generator for Fluid Typography

A CSS clamp() generator produces fluid typography and spacing values using the clamp(min, preferred, max) function. The clamp value scales smoothly between a minimum and maximum based on the viewport width, eliminating multiple @media query breakpoints for font sizes and spacing.

This free tool calculates the correct viewport-based slope and intercept so your font sizes and spacing values scale perfectly across all screen sizes, from mobile to large desktop.

Why use CSS clamp() for fluid typography?

• No breakpoints needed: One clamp() value replaces three or four @media query overrides for a single font-size property.
• Smooth scaling: Text grows and shrinks continuously as the viewport changes, not in jumps at fixed breakpoints.
• Smaller CSS output: Fewer media queries mean a lighter stylesheet and faster page rendering.
• Design system ready: Use clamp() values in your Tailwind CSS config or CSS custom properties for a fully fluid type scale.

How to use the CSS Clamp Generator

1. Set your minimum font size (e.g. 16px) and the viewport width where it starts (e.g. 320px).
2. Set your maximum font size (e.g. 24px) and the viewport width where it stops growing (e.g. 1280px).
3. The tool calculates the clamp() expression including the correct vw slope and intercept.
4. Preview the live scaling behavior and copy the generated CSS value.

Using clamp() in Tailwind CSS

You can use the generated clamp() value directly in your Tailwind configuration or as an arbitrary value in templates:

• In tailwind.config.js: add it under theme.fontSize as a named custom value.
• In a template: text-[clamp(1rem,2.5vw+0.5rem,1.5rem)] using Tailwind JIT arbitrary value syntax.

Browser support for clamp()

The clamp() function is supported in all modern browsers: Chrome 79+, Firefox 75+, Safari 13.1+, and Edge 79+. It covers more than 97% of global browser usage. No fallback or polyfill is needed for any project that does not support Internet Explorer.

Fluid spacing with clamp()

The same technique applies to spacing, not just typography. Use clamp() for padding, margin, gap, and width values to create fully fluid layouts that respond to the viewport without any media queries.