📏 PX to REM Converter
Convert between pixels and REM units for CSS
Base Font Size
px (browser default is 16px)
PX → REM
1rem
REM → PX
16px
Reference Table
FAQ
Why use REM instead of PX?
REM units are relative to the root font size, making your design scale properly when users change their browser font size. This improves accessibility and responsive design.
What's the difference between EM and REM?
REM is relative to the root (html) font size. EM is relative to the parent element's font size. REM is more predictable since it doesn't compound.