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CSS Clamp() Calculator for Fluid Typography

Eliminate dozens of media queries with fluid CSS clamp(). Enter your minimum and maximum screen sizes and font values to generate mathematically exact clamp() expressions.

Processed locally in your browser.
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How to Use CSS Clamp() Calculator for Fluid Typography

1

Input Screen Widths

Specify minimum viewport (e.g. 375px) and maximum viewport (e.g. 1440px).

2

Define Font Range

Enter target minimum font size (e.g. 16px) and maximum size (e.g. 32px).

3

Copy CSS Clamp

Copy the calculated clamp() formula ready for your CSS classes.

About CSS Clamp() Calculator for Fluid Typography

Uses linear interpolation: y = mx + b where slope = (maxSize - minSize) / (maxViewport - minViewport) and intercept = minSize - slope * minViewport, yielding clamp(min, intercept + slope*100vw, max).

Supported Formats

CSS3

Operational Limits

  • Mathematical linear interpolation assumes standard viewport scaling.

Key Features

  • Exact linear interpolation slope calculation
  • Supports PX and REM units
  • Live interactive viewport resize preview
  • Zero media queries needed
  • Instant copy to clipboard

Frequently Asked Questions

CSS clamp(MIN, VAL, MAX) keeps the value between the lower and upper bounds while scaling dynamically with the viewport width in between.

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