CSS Unit Converter
Convert between px, rem, em, %, pt, vw, and vh.
About the CSS Unit Converter
Convert a CSS length between pixels, rem, em, percent, points, vw, and vh, with configurable root font size and viewport dimension so the conversions match your actual project setup.
Popular uses
- css unit converter
- px to rem
- em to px
- vw vh converter
Examples
16px to rem
16px, root 16pxOutput
1remKeyboard shortcuts
- Copy the main outputCtrl / ⌘ + Shift + C
- Download the resultCtrl / ⌘ + S
- Share this toolCtrl / ⌘ + Shift + S
- Reset the inputsAlt + R
- Open the tool search paletteCtrl / ⌘ + K
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Frequently asked questions
Read more
- CSS container queries vs media queries
Media queries respond to the viewport; container queries respond to the component's own box. When to use which, with working examples.
Version 1.0.0 · Updated 2026-08-06 · Runs entirely in your browser