REM to PX Converter

Convert REM units to Pixels (and vice-versa) instantly.

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About REM to PX Converter

This tool helps you quickly convert CSS units between REM (Root EM) and PX (Pixels). It parses your code, identifies all values with the selected unit, and calculates the equivalent value based on your specified base font size.

Instant Conversion

Automatically converts as you type or upload files. No waiting required.

File Support

Drag and drop your CSS, SCSS, or LESS files to convert the entire file at once.

Custom Base Size

Adjustable root font size (default 16px) for precise calculations.

How it works

The converter scans your text for numbers followed by the unit (e.g., 1.5rem or 24px). It then applies the conversion formula:

  • REM to PX: REM Value * Base Size = PX Value
  • PX to REM: PX Value / Base Size = REM Value