PX to REM Converter is a Chrome extension developed by CSSUnitConverter.com. This tool allows users to effortlessly convert pixel (px) values to rem and vice versa. The standout feature of this extension is that conversions occur automatically as users type or modify values in the input box, eliminating the need to manually press a convert button.

Additionally, PX to REM Converter offers the convenience of reverse conversions from rem to pixels. Users can input values in the rem box, and the corresponding pixel value will be instantly displayed in the Pixels box. The ability to adjust the base (root html) size adds further flexibility to this comprehensive conversion tool.