📐 CSS Clamp Generator — Fluid Typography & Spacing

Generate CSS clamp() values for fluid responsive design. Set min, preferred, and max sizes. Free, no signup.

The quick brown fox jumps over the lazy dog. Fluid typography that scales with your viewport but never gets too small or too large.

How to Use This Tool

  1. Set minimum size (rem or px) — Choose preferred viewport-based size (vw) — Set maximum size (rem or px) — Copy the generated clamp() CSS and use in your stylesheet

Frequently Asked Questions

What is clamp() in CSS?

clamp(min, preferred, max) creates a value that scales between a minimum and maximum. It's perfect for fluid typography that grows with viewport but never gets too small or too large.

What units should I use?

Use rem or px for min/max, and vw for preferred. Example: clamp(1rem, 2vw + 0.5rem, 2rem) creates text that scales with viewport width.

Is clamp() widely supported?

Yes. clamp() has 96%+ browser support. It works in all modern browsers including Chrome, Firefox, Safari, and Edge.

Related Tools

(function() { var inputs = ['clmpMin', 'clmpPref', 'clmpMax']; function getUnit(id) { return document.getElementById(id + 'Unit').value; } function update() { var min = document.getElementById('clmpMin').value; var pref = document.getElementById('clmpPref').value; var max = document.getElementById('clmpMax').value; var minUnit = getUnit('clmpMin'); var prefUnit = getUnit('clmpPref'); var maxUnit = getUnit('clmpMax'); var css = 'clamp(' + min + minUnit + ', ' + pref + prefUnit + ', ' + max + maxUnit + ')'; document.getElementById('clmpOutput').textContent = 'font-size: ' + css + ';'; // Live preview (approximate by setting font-size; real clamp varies with viewport) document.getElementById('clmpPreviewText').style.fontSize = css; } // All inputs inputs.forEach(function(id) { document.getElementById(id).addEventListener('input', update); document.getElementById(id + 'Unit').addEventListener('change', update); }); // Presets document.querySelectorAll('.clmp-presets button').forEach(function(btn) { btn.addEventListener('click', function() { document.getElementById('clmpMin').value = this.dataset.min; document.getElementById('clmpMinUnit').value = this.dataset.minUnit; document.getElementById('clmpPref').value = this.dataset.pref; document.getElementById('clmpPrefUnit').value = this.dataset.prefUnit; document.getElementById('clmpMax').value = this.dataset.max; document.getElementById('clmpMaxUnit').value = this.dataset.maxUnit; update(); }); }); // Copy document.getElementById('clmpCopyBtn').addEventListener('click', function() { navigator.clipboard.writeText(document.getElementById('clmpOutput').textContent).then(function() { var btn = document.getElementById('clmpCopyBtn'); btn.textContent = '✅ Copied!'; setTimeout(function() { btn.textContent = '📋 Copy CSS'; }, 1500); }); }); document.getElementById('clmpOutput').addEventListener('click', function() { navigator.clipboard.writeText(this.textContent).then(function() { var out = document.getElementById('clmpOutput'); out.style.background = 'rgba(245, 158, 11, 0.15)'; setTimeout(function() { out.style.background = ''; }, 400); }); }); update(); })();

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