This simple calculator helps you create clamp() functions for fluid responsive web design. Save it for easy access, as you’ll likely use it often!
The clamp() function in CSS is your secret weapon for fluid typography—text that smoothly adjusts between a minimum and maximum size based on screen width. But manually calculating the math for clamp() can be tricky.
That’s where our clamp CSS generator comes in! Designed for students and beginners, this tool helps you:
Save time with instant clamp() code
Learn CSS fluid typography basics in minutes
Set Root Font Size
Choose your base font size:
10px: Common for simplified rem calculations (1rem = 10px)
16px: Default browser size (1rem = 16px)
Input Viewport Sizes
Minimum Screen Width (e.g., 320px for mobile)
Maximum Screen Width (e.g., 1200px for desktop)
Define Font Sizes
Minimum Font Size (e.g., 1rem = 16px if root is 16px)
Maximum Font Size (e.g., 3rem = 48px if root is 16px)
Generate & Copy Code
Get instant clamp() code like:
font-size: clamp(1rem, 0.5rem + 2vw, 3rem);
Fluid typography means your text automatically adjusts to fit any screen. Instead of fixed sizes like 16px, you use clamp() to set a flexible range:
/* Format: clamp(min, preferred, max) */
font-size: clamp(1rem, 2vw + 1rem, 2rem);
This keeps your website looking professional on all devices—no extra coding! Click here to learn more about CSS Clamp Function.
10px Root: Makes math easier (1rem = 10px, 2rem = 20px)
16px Root: Standard browser default (1rem = 16px)
REM Units: Always relative to root size for consistent scaling
Root Font Flexibility: Switch between 10px/16px bases
Accurate Calculations: Auto-converts rem to pixels
No Icons or Distractions: Clean, student-focused design
Free Forever: No signups or hidden costs
Start with 16px Root: Aligns with most browsers’ defaults.
Test on Mobile: Ensure text stays readable on small screens.
Combine with Media Queries: Add extra tweaks for specific devices.
