PX to REM Converter

Convert pixels (px) to rem units based on root font size. Live, accurate, perfect for responsive CSS development.

Convert Pixels to REM

Root Font Size (px) — default 16

Pixels (px)

REM

16px = 1rem

Quick Reference Table

Why Use REM Instead of PX in CSS?

rem (root em) units are relative to the root <html> font size, usually 16px by default. Using rem lets your design scale naturally when users zoom or change their browser's default font size, making it more accessible than fixed pixel values.

Common conversions at 16px base: 1rem = 16px, 0.5rem = 8px, 1.5rem = 24px, 2rem = 32px. Change the root font size above to match your project's setup.