PX to REM Converter

Instantly convert pixel values to REM with a custom base font size. Fast, clean, and built for developers. No ads, no tracking.

PX to REM Converter — your developer toolbar shortcut for instant CSS unit conversion. Stop the mental gymnastics. Click the icon, type a pixel value, and instantly see the REM equivalent — right from your Chrome toolbar. ⚡ What it does Type any pixel value and the extension immediately shows you the exact REM equivalent based on your configured root font size. The default is 16px — matching the browser — but you can set your project's actual base and it's remembered automatically. 🛠 Features - Real-time conversion — result updates as you type - Configurable root font size (10px, 16px, 18px — your call) - Quick-pick buttons for common values like 8, 12, 16, 24, 32 - Reference table with 20 pre-calculated PX/REM pairs - One-click copy to clipboard - Formula display so you always see the math - Works fully offline — no internet ever needed 🔒 Zero data collection. No analytics, no tracking, no network requests, no ads — ever. The only permission used is storage, to remember your root font size locally.