Convert between pixels and REM units instantly
REM (Root EM) units are relative to the root element's font size. This calculator helps you convert between absolute pixel values and relative REM units.
Converting pixels (PX) to REM units is essential for creating responsive, accessible websites. REM units are relative to the root element's font size (typically 16px by default in most browsers), making them ideal for scalable and maintainable CSS designs.
Based on a 16px base font size:
Simply enter a value in either the Pixels (PX) or REM field, and the calculator will automatically convert it to the other unit. You can also adjust the base font size if your project uses a different root font size than the standard 16px.