CSS Unit Converter — Convert px, rem, em, %, vw, vh

Quickly convert between popular CSS units. Set root font size or viewport dimensions and get responsive, scalable CSS outputs.

Unit Converter
Value
Root Font Size (px)
Viewport Width (px)
Viewport Height (px)
Result: 1 rem
ToolMateX Text Sample
CSS Output
1

Why Use This Tool?

Whether you're designing responsive websites or adjusting layouts, understanding how CSS units convert helps you build more scalable interfaces. This tool gives you real-time conversion and visual feedback.

Use Cases

  • 🔁 Convert px to rem/em or vice versa
  • 📱 Convert px to vw/vh for viewport-based designs
  • 🔍 Test font sizing across units
  • 🧪 Preview CSS before applying it

Frequently Asked Questions (FAQs)

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