REM to PX Converter Online — Calculate Exact Pixel Dimensions

Convert REM units to pixels (px) instantly. Check exact physical dimensions for design handoffs, Figma mockups, and CSS styling.

✓ Instant conversion from rem to physical pixel dimensions

✓ Configurable root base font size (defaults to standard 16px)

✓ Batch conversion: paste entire CSS blocks or lists of rem values

✓ Essential for converting design systems to Figma specifications

How It Works

  1. Enter rem values (e.g. 1.5rem, 2rem, 0.875rem).
  2. Formula: px = rem * baseFontSize (16) is calculated.
  3. Instant pixel measurements are displayed.