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PX to REM Converter
Convert between px and rem/em for any root font size, with a reference table.
Free · No sign-up · Updated August 2026
1.5rem
Common sizes (base 16px)
12px = 0.75rem
14px = 0.875rem
16px = 1rem
18px = 1.125rem
20px = 1.25rem
24px = 1.5rem
32px = 2rem
48px = 3rem
Converts between px and rem/em using your root font size (default 16px). Use rem for scalable, accessible typography.
🔒 This tool runs entirely in your browser. Your data is never uploaded.
Frequently asked questions
Why use rem instead of px?＋
rem scales with the user's root font size, so your layout respects browser and accessibility settings — better for responsive, accessible design.
What root font size should I use?＋
16px is the browser default. Unless you've changed the root font-size, keep it at 16.