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.

Frequently Asked Questions

What is 1rem in pixels?

In all standard web browsers, 1rem equals 16 pixels unless the root html font-size has been modified.