CSS Clamp Generator
Create a CSS clamp() expression from minimum and maximum sizes and viewport widths for fluid typography or spacing.
Runs locally in your browser. Your data never leaves your device.
Inputs
Output
Use this clamp() value in CSS font-size, spacing, or layout rules.
How to generate CSS clamp() values
Create a fluid CSS clamp() expression from minimum and maximum sizes and viewport widths.
How to use it
- Enter the minimum and maximum size in pixels.
- Enter the viewport range where the value should scale.
- Copy the generated clamp() value into your CSS.
Where clamp() helps
CSS clamp() is useful for fluid typography, spacing, and layout values that should grow with the viewport but stay within readable limits.
Implementation tips
- Test the value at small and large viewport widths.
- Use consistent min and max viewport values across a design system.
- Pair clamp() with line-height and spacing decisions for readable layouts.
Local generation
The formula is calculated in your browser. No CSS values are sent to a server.
CSS clamp generator FAQ
- Why does the output use rem and vw?
- rem keeps the minimum and maximum tied to root font size, while vw lets the middle value scale with viewport width.
- Can I use it for spacing?
- Yes. The generated value can be used for font-size, margin, padding, gap, or other length properties.
- Does clamp() need JavaScript?
- No. clamp() is pure CSS and works directly in stylesheets.