Font-size & Typescale Clamp Generator

What is Responsive Font?

Responsive fonts are designed to adapt automatically to different screen sizes. Whether someone is browsing on a phone, tablet, or large desktop, the text should remain readable and proportionate.

Traditionally, media queries were used to set different font sizes for different screen sizes. But with today's wide range of devices and pixel densities, managing font sizes using media queries alone becomes complex and time-consuming.

That’s where clamp() comes in. This CSS function makes it easy to define minimum, preferred, and maximum font sizes that adjust fluidly across devices — without writing any media queries. This is what we call fluid responsive typography.

Font-size with clamp()

The clamp() function lets you define a font size that scales smoothly between a minimum and maximum value based on the current viewport width — offering cleaner CSS and a better user experience.

Example:

In the example below, the font size starts at 1rem (16px) on small screens (320px) and scales up to 1.25rem (20px) on large screens (1200px).

font-size: clamp(1.00rem, calc(0.909rem + 0.455vw), 1.25rem);

Why Use clamp() for Font Size?

Modern developers and designers are increasingly using clamp() for fluid typography. Here's why:

• ✅ No media queries required
• 📱 Scales smoothly across all screen sizes
• ♿ Allows hard min/max limits for accessibility
• 🧼 Simplifies and future-proofs your CSS
• 📏 Maintains consistent visual hierarchy

What is Typescale Font Size Clamp?

A typescale is a consistent system of font sizes — like how your H1 should be larger than H2, and so on. When combined with clamp(), you get a fluid responsive typescale that adjusts perfectly across screen sizes.

Each text element (H1-H6, body, small, code) maintains its visual hierarchy while scaling fluidly. This is one of the best ways to create balanced and professional-looking typography in modern UI design.

🔗 Read our full guide on fluid typescale typography using clamp()

What is Typescale in Typography?

Think of typescale as a visual rhythm or formula for font sizes. For instance, each heading might be 1.25x or 1.333x larger than the one below it. This consistent scaling ensures readability and aesthetic harmony — like a musical scale, but for text.

How to use clamp() in a Typescale

Start with a base font size (e.g., 16px), then apply a multiplier for each element — H1, H2, body text, and so on.

This tool helps you calculate the right clamp() values based on your:

• Font size range
• Viewport range
• Multiplier scale

Just adjust the sliders or enter your values manually — and your CSS is ready to copy.

How this Font Size Typescale Generator Works

We built this tool to make responsive typography easy:

• 🎯 Choose your minimum and maximum font sizes
• 📐 Set the viewport range (e.g., 360px to 1440px)
• ⚖️ Customize scaling multipliers for H1-H6, body, small, and code
• 🧠 Preview and copy your generated CSS or Tailwind styles

That's it — no complex setup, just smooth, scalable typography in seconds

Font-Family & Font-Weight Support

Typography is more than just font sizes. The right font family and weight can elevate your design.

In our tool, you can customize both font family and font weight for two main groups: headings (H1-H6) and body text (body, small, code).

This means you can preview how your typography will look in real time using different font combinations — for example, a bold display font for headings and a clean sans-serif for body text.

Simply enter the font family names you want to use, and our tool will generate the appropriate CSS. You can use any web-safe font or link to Google Fonts for more options.

You can also control:

• Available font weights (e.g., 400, 500, 700)
• Preview with Google Fonts
• Fallbacks if a font is not supported in the browser

This helps you create a consistent and scalable typography system that looks great and reflects your brand.

Typescale Multipliers Support

We support a range of typescale presets so you don't have to guess what ratio works best. You can fine-tune multipliers for each element or start with a recommended scale:

• Default Min
• Comfortable Min
• Default Max
• Comfortable Max
• Minor Second (1.067)
• Major Second (1.125)
• Minor Third (1.200)
• Major Third (1.250)
• Perfect Fourth (1.333)
• Augmented Fourth (1.414)
• Perfect Fifth (1.500)
• Golden Ratio (1.618)

Each preset adjusts the ratio between H1-H6, body, small, and code text — so you get a balanced and readable hierarchy right out of the box. You can also manually tweak each multiplier to suit your design needs.

Live Typography Preview Support

Our tool includes a full live preview panel where you can see how each element (H1-H6, base text, small, tiny, and code) looks with your chosen font sizes and typescale.

You can:

• Adjust the simulated screen width using a slider
• Instantly see how the clamp() values scale from mobile to desktop
• Edit the preview text to test with real content

This makes it easy to understand how your font choices and scaling ratios will feel in a real project — before copying the CSS or Tailwind code.

root + variables Support

If you are working on a big project where you need variables to set up the font size and font family for different containers, you can copy the css code with root and variables.

SCSS Support

If you're using SCSS, the output from this tool integrates perfectly. You can even use variables to maintain consistency with your design tokens or component library.

Tailwind CSS Support

Enable the Tailwind CSS toggle to generate utility classes like .cg-h1, .cg-text-sm, etc. You can customize the class prefix to fit your project's naming style. It's built to work seamlessly with Tailwind workflows.

Bonus Tip

Not sure which scale to use? Try one of the built-in presets like the Golden Ratio or Minor Third — both are designer favorites that produce beautifully balanced typography.

💬 Want More Tips?

Explore our:

• 🧭 Step-by-step guide
• 🛠️ Basic Clamp Calculator or use only basic settings in our clampgenerator, if you're just getting started

Related Tools

• Font Size - Typescale Clamp Calculator
• Layout & Spacing Clamp Generator
• Fluid Typography with clamp()
• How to use this Tool (Full Guide)