PX to REM Converter

Essential tool for responsive web design.

Responsive Typography: Why use REM?

PX (Pixel) is an absolute unit that does not scale. REM (Root EM) is a relative unit that scales based on the user's browser font size settings. Using REM improves accessibility and responsive design.

Accessibility Ready

Respects user font preferences. If a visually impaired user scales their browser font, your site scales with it.

Base Size Config

Customize the base font size (usually 16px) for your specific project needs.

Dual Conversion

Convert PX to REM or REM to PX instantly.

Why choose UnitMaster?

  • Web accessibility compliance.
  • Modern CSS practices.
  • Responsive layouts.
  • 100% Client-side.

Frequently Asked Questions

Privacy Dashboard

Processing ModeOffline Ready
Client-Side (WASM)

Calculations happen locally. No data sent to servers.

Network Requests
DESTINATION
STATUS
AnalyticsAllowed
AdSenseAllowed
File UploadsNone

Incognito Mode

PX to REM Converter - CSS Unit Calculator | UnitMaster - Offline Developer Tools