Fluid font-size generator

Build a responsive CSS clamp expression. Free, simple, and right here in your browser.

Preparing your tool…
A little possibility, waiting.Your result will appear here.
A useful little guide

How to use fluid font-size generator

Generate a fluid font-size expression that scales between a minimum and maximum size across your chosen viewport range.

  1. Enter a sample value, color, URL or structured input.
  2. Choose the required format or options and run the tool.
  3. Review the output and copy it into your own workflow.
A real use case

Try this next

Create a heading that grows from 24 pixels at a 360-pixel viewport to 48 pixels at 1440 pixels.

A detail to keep in mind

The calculation assumes a 16-pixel root font unless you enter another value. Check the resulting text for readability and wrapping.

Questions, answered.

Is fluid font-size generator free to use?

Yes. This tool is part of Nepocore’s free browser toolkit. There is no paid tier, file-download gate or application account required.

What should I check before using the result?

The calculation assumes a 16-pixel root font unless you enter another value. Check the resulting text for readability and wrapping.

Does this tool upload my files or text?

The tool processes its input in your browser. File contents and text are not sent to a processing server. See the privacy page for local storage and hosting details.

A little more in your toolkit

See the category