Generate responsive CSS clamp() values for fluid typography, spacing, and layout properties. Set your size range, viewport range, and copy clean CSS instantly.
font-size: clamp(1rem, calc(0.2727rem + 3.6364vw), 3rem);320px viewport
16px
Middle viewport
32px
1200px viewport
48px
Minimum: 1rem
Fluid value:calc(0.2727rem + 3.6364vw)
Maximum: 3rem
Clamp values keep responsive design predictable while reducing breakpoint-specific CSS.
Create typography and spacing that grows naturally between mobile and desktop widths.
Replace repeated media queries with one readable CSS declaration.
Minimum and maximum values prevent text or spacing from becoming too small or too large.
Build consistent type scales, spacing tokens, and component rhythm with reusable values.
REM-based output respects root font-size decisions while staying responsive.
Convert design ranges into copy-ready CSS your team can paste directly into stylesheets.
| Use Case | Range | CSS |
|---|---|---|
| Body text | 16px to 20px | clamp(1rem, calc(0.9091rem + 0.4545vw), 1.25rem) |
| Card title | 20px to 28px | clamp(1.25rem, calc(1.0682rem + 0.9091vw), 1.75rem) |
| Hero heading | 40px to 80px | clamp(2.5rem, calc(1.5909rem + 4.5455vw), 5rem) |
| Section spacing | 48px to 96px | clamp(3rem, calc(1.9091rem + 5.4545vw), 6rem) |
CSS clamp() chooses a preferred value while keeping it between a minimum and maximum value.
REM is usually better for font sizes because it works with root font-size settings. This generator uses pixel inputs and creates REM-based output.
Yes. You can paste the value into custom CSS, arbitrary values, or design tokens where your project supports them.
Yes. The CSS clamp generator is free to use and runs in your browser.
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