px ⇄ rem converter

Convert pixels to rem and em (and back) for CSS. Set the base size (usually 16 px) and get the value instantly.

Value

Unit

Base (px)

What it's for

Modern CSS often uses rem and em instead of pixels for scalable, accessible layouts. This tool does the conversion instantly, so you don't have to work it out in your head.

16 px base

By default 1 rem = 16 px (the browser's default text size). If you changed the root font-size, edit the base to get the right value.