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PX to REM

Use rem for accessible, scalable typography and spacing. Set your root size and convert either way.

Free, no sign-up. Runs in your browser: nothing is uploaded.

How to use PX to REM

  1. Set the root font size (16 px by default).
  2. Type pixels or rem.
  3. Copy the value or use the table.

Features

  • Two-way conversion
  • Custom root size
  • Reference table
  • One-click copy

Private by design

Everything you type is calculated by your browser on this device. Nothing is sent to openWorkstand or anyone else, so the PX to REM is safe for private and work data, and it keeps working offline once the page has loaded. How local processing works

When to use the PX to REM

  • Convert a design into responsive CSS.
  • Set font sizes in rem.
  • Check how text scales for accessibility.

Frequently asked questions

Why use rem instead of px?

rem scales with the user’s browser font size setting, which improves accessibility.

Keep working with the result

openWorkstand also includes a free workspace with documents, spreadsheets, tasks, projects and a calendar that save to a folder on your computer.