Fluid Typography Calculator
Generate clamp() values for viewport-responsive font sizes.
▶About this tool
This tool auto-calculates clamp() values in one click. Three features: 1) Generate clamp() from min/max viewport and font sizes, 2) Useful for responsive and accessible font sizing, 3) Copy generated CSS directly. Ideal for responsive typography.
Tool interface
Usage
- Enter min/max viewport width and font sizes
- clamp() recommended value is generated automatically
- Copy generated CSS and paste into your project
When to use
Responsive typography that scales with viewport, avoiding manual clamp() math.
Examples
Output: clamp(1rem, 2.5vw + 0.5rem, 2rem)
FAQ
What is clamp()?
CSS function with min, preferred, and max values. Returns a value within that range. Great for responsive font sizes.
Benefits of Fluid Typography?
Smooth font scaling without many media queries. Balances readability and design consistency.
How to write clamp()?
clamp(min, preferred, max). Preferred uses vw or calc() for viewport. This tool auto-generates the formula.
Fluid Typography vs media queries?
Media queries change at breakpoints. Fluid Typography scales smoothly. Better for mid-size devices.
How to calculate clamp() preferred value?
Linear interpolation from min/max viewport and font sizes. This tool calculates it automatically.
Best practices for responsive font size?
Use clamp() with min/max. Use vw for smooth middle. Avoid extremes. This tool helps set the range.
Does Fluid Typography work on mobile?
Yes. Scales with viewport. Works on phone, tablet, desktop.
Browser support for clamp()?
Chrome, Firefox, Safari, Edge. IE11 not supported—add fallback like font-size: 1rem first.
Minimum font size for accessibility?
16px (1rem) for body text. Set clamp() min to 1rem typically.
How to use Fluid Typography calculator?
Enter min/max viewport width and font sizes. The tool outputs clamp() CSS to copy.
Related tools
Typography Set