PX / REM Converter
Realtime PX / REM converter with base size and precision controls.
PX / REM Converter
Formula
px ÷ base = rem
Formula
rem × base = px
Usage Tips
• Editing px or rem updates the other automatically
• Default base is 16px; adjust for your project
• Supports input with units (e.g., 16px, 1rem)
About This Tool
The PX / REM converter helps frontend developers with responsive layout conversions. Enter either px or rem, and it calculates the other using a customizable base font size and precision settings for different design systems.
Features
- ⚡ Instant Conversion: Updates the other value as you type
- 🎯 Custom Base: Set the base font size freely
- 🔢 Precision Control: Choose 0-6 decimal places
- 📋 One-click Copy: Copy px or rem values quickly
- 🧩 Layout Ready: Ideal for mobile and responsive design