Calculation based on a root font-size of pixel.

What Is the Px to REM Converter?

This PX to REM converter makes it easy to automatically convert PX to REM in seconds, without having to do the calculations by hand. The tool works instantly, is completely free, and doesn't require signing up for an account or providing your email to use. It also works directly in your browser, with no need to download a program or app.

This conversion tool is useful as PX is a static and fixed unit, but REM is a more flexible and responsive unit that lets you scale your text and other page design elements correctly, so they look good on any device, no matter how large or small the screen is. This ensures your content is accessible to a much wider variety of people.

How to Use the Px to Rem Converter

  1. Start by selecting your root font size. The default and standard size is 16, but feel free to adjust this number depending on your unique needs and preferences.
  2. After you've entered the proper root font size, start the conversion by entering your pixel value in the "Pixels" box on the left side of your screen.
  3. As you enter your pixel value, the corresponding REM value appears automatically in the "REM" box on the right side of the screen.
  4. If you want to switch over to converting REM values to pixel values instead, it's as easy as clicking the swap button and then following these steps again from the start.

Pixels to REM Conversion Table

PixelsREM
40.25
80.5
120.75
140.875
161
181.125
201.25
241.5
281.75
322