PX to REM
Convert between PX and REM units
What is PX to REM?
PX to REM Converter converts between pixel and rem units for CSS, based on your root font size — essential for responsive, accessible design.
When to use this tool
- Converting fixed pixel values to relative rem units
- Building responsive layouts with consistent scaling
- Migrating a design from pixels to a rem-based system
- Checking what rem value corresponds to a pixel size
How it works
Divides the pixel value by the root font size (default 16px) to get rems: rem = px / rootFontSize. Also supports reverse conversion: px = rem × rootFontSize. Custom root font sizes are configurable.
Examples
About PX to REM
Convert between PX and REM units It runs entirely in your browser — no files are uploaded to any server, ensuring complete privacy and instant results.
- •Convert between HEX, RGB, and HSL
- •Generate gradients and shadows visually
- •Preview changes live before copying
- •Calculate PX to REM conversions
Last updated: 2025-01-15
FAQ
Convert between PX and REM units
Yes, completely free. No signup required.
Yes. Runs entirely in your browser, no files uploaded.
Yes, works on any device with a modern browser.
No, everything runs in your browser.