Viewport: 1200px

CSS Clamp() Function Demo

Interactive tool for testing CSS clamp() fluid typography with real-time preview

Current font size: 32px
1200px
16px
32px
320px
1200px

CSS Clamp() Function Tutorial

Understanding CSS Clamp Syntax

The CSS clamp() function constrains a value between minimum and maximum limits. It takes three parameters: clamp(minimum, preferred, maximum). The preferred value is typically based on viewport units to create fluid scaling between the defined boundaries.

Fluid Typography Benefits

CSS clamp() eliminates the need for multiple media queries by providing smooth, continuous scaling. This creates better user experiences across all device sizes while maintaining readable text at every viewport width. The function automatically handles edge cases and prevents text from becoming too small or too large.

Implementation Example

Watch how the font size changes as you adjust the screen size slider above. The text scales proportionally between your defined minimum and maximum values, demonstrating the power of CSS clamp() for responsive typography design.

Generated CSS clamp() code:
font-size: clamp(16px, 16px + 16 * ((100vw - 320px) / 880), 32px);