CSS Clamp Generator
Build a responsive font-size rule that scales smoothly between mobile and desktop viewport widths.

Web and app development tool
CSS Clamp Generator
Generate a responsive CSS clamp() font-size rule from predictable viewport and size limits.
Clamp inputs
Responsive text preview
Ready
Generated CSS
font-size: clamp(1rem, 2.5vw, 2rem); What This Tool Is Good For
The CSS Clamp Generator helps create responsive font-size rules for headings, hero text, article layouts, buttons, cards, and app interfaces.
When To Use It
Use it when text feels too small on desktop, too large on mobile, or when you want smoother scaling between screen sizes without writing multiple media queries.
How To Use The Output
Copy the generated CSS and apply it to a heading, paragraph, button, or reusable class. Treat the result as a starting point and test it on real mobile widths.
Example Use Cases
- Responsive article headings
- Hero text that scales without extra breakpoints
- Card and button text that stays readable across layouts
Tips
Clamp is especially useful for headings and interface text. Body text should still be checked carefully for comfortable reading on small screens.
Related Guides, Experiments, And Tools
BadGames tools
Use the browser tools behind the guides.
Prototype responsive CSS, animation timing, sprite sheets, arcade physics, and 3D material choices before moving values into a real project.
Browse by category and library
Popular tools
Tools readers are using.
No Runtime
CSS Clamp Generator
Generate a responsive CSS clamp() font-size rule from predictable viewport and size limits.
PixiJS
PixiJS Sprite Sheet Previewer
Preview generated sprite frames and calculate simple sprite sheet dimensions and config snippets.
Three.js
Three.js Material And Light Inspector
Inspect how material color, roughness, metalness, and directional light values affect a small Three.js scene.
