To convert pixel values to rem: Paste your stylesheet into the CSS Online Viewer Tool and click px to rem (Alt+4). All px font sizes, margins, and padding values will be converted automatically using the standard browser ratio of 1rem = 16px.
Why Use rem Units Instead of px?
Pixels (px) are static absolute units that remain fixed regardless of user browser settings. If a visually impaired user increases their default browser font size from 16px to 24px, websites built with hardcoded pixel values will fail to scale properly, creating accessibility barriers.
The rem unit (root em) is relative to the root <html> element's font size. By expressing font sizes, padding, and margins in rem, your layout scales dynamically according to user preferences.
Conversion Formula
Extracting Color Palettes from CSS Stylesheets
When taking over legacy projects, identifying all hex, rgb, and hsl color codes can be time-consuming. Use the Extract Colors action in our CSS tool to compile a clean list of all unique color definitions declared throughout your CSS rules.