CSS Clamp Generator for Fluid Typography
Generate responsive clamp() formulas for font sizes, section spacing, padding, gaps, and other CSS lengths. Copy rem output, pixel fallback, or a CSS variable.
A CSS clamp generator creates a value like clamp(1rem, 0.5rem + 2vw, 3rem).
It lets a property scale smoothly between a minimum and maximum without media queries.
Start with real design limits
Use the smallest mobile value and largest desktop value your layout should actually reach.
Use viewport bounds intentionally
Set the min and max viewport widths where scaling should begin and stop.
Fluid preview text
Resize the browser to see the value move between 28px and 56px.
font-size: clamp(1.75rem, 1.0652rem + 3.0435vw, 3.5rem);
--fluid-font-size: clamp(1.75rem, 1.0652rem + 3.0435vw, 3.5rem);
clamp(1.75rem, 1.0652rem + 3.0435vw, 3.5rem)
clamp(28px, 17.0435px + 3.0435vw, 56px)
Slope
3.0435vw
Intercept
17.0435px
Range
360px to 1280px
CSS layout output is a starter snippet. Test it with your real content, breakpoints, container sizes, and browser support before shipping.
Suggested workflow
Prepare responsive CSS sizing
Use this path when design values need clean CSS units, fluid scaling, and final visual checks.
What does a CSS clamp generator do?
It calculates a clamp() value that grows between a minimum and maximum CSS value across a viewport range.
Can I use it for fluid typography?
Yes. Font size is the default use case, and the output is copy-ready for responsive fluid typography.
Can clamp() be used for spacing?
Yes. The same formula can be used for padding, margin, gap, border radius, or other length-based CSS properties.
How is the clamp formula generated?
The clamp formula is generated in the browser from the numbers you enter based on the current public implementation.