PX to REM Converter
Convert Pixels (px) to REM units instantly for responsive CSS web design. Free online calculator.
Base Font Size (px)
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Quick Reference Table (Base: 16px)
PX
REM
8px
0.5rem
12px
0.75rem
14px
0.875rem
16px
1rem
18px
1.125rem
20px
1.25rem
24px
1.5rem
32px
2rem
48px
3rem
64px
4rem
Why use REM instead of PX?
REM (Root EM) is a scalable unit in CSS. Unlike pixels, which are absolute, REM units are relative to the root font size of the HTML document (default is 16px). Using REM units makes your websites more accessible, as they scale naturally when a user changes their browser's default font size.