CSS Clamp Calculator
Generate precise responsive CSS clamp() values for fluid typography, spacing, and layouts without complex media queries.
CSS Clamp Calculator
This calculator auto-updates when values change.
clamp() value
clamp(1rem, 0.636rem + 1.818vw, 2rem)
VW multiplier
1.818vw
Intercept
0.636rem
Range
1rem
About This CSS Clamp Calculator
This CSS clamp calculator creates fluid CSS values that scale between a minimum and maximum size across a viewport range.
Use it for responsive font sizes, spacing, padding, and layout values that should grow smoothly between breakpoints.
How to Use This Tool
- 1
Enter the size range
Add the minimum and maximum value you want CSS to produce.
- 2
Set the viewport range
Enter the viewport widths where scaling should begin and end.
- 3
Choose the output unit
Use px or rem depending on how your project defines sizing.
- 4
Copy the clamp output
Use the generated CSS value and mathematical breakdown in your stylesheet.
Frequently Asked Questions
What does clamp() do?v
CSS clamp() keeps a value between a minimum and maximum while allowing a preferred fluid value in the middle.
Can I use rem values?v
Yes. The calculator supports rem output and uses the root font size to convert pixel inputs when needed.
Should I still test the CSS?v
Yes. The formula is mathematical, but you should test the final layout across your real breakpoints.