Converters

PX to REM Converter

Convert pixel values to REM units based on configurable root font size.

Instant Private 100% Free CSS Ready

PX → REM

Paste your value below and get instant results

Default: 16px. Change to match your project's root font size.
PX REM Description
8px 0.5rem Small spacing
12px 0.75rem Caption text
14px 0.875rem Compact body
16px 1rem Default body (base)
18px 1.125rem Large body
20px 1.25rem Subheading
24px 1.5rem H3 heading
32px 2rem H2 heading
48px 3rem H1 heading
64px 4rem Display heading

How It Works

Convert in 3 simple steps

1

Paste Your Value

Enter your PX value in the input field.

2

Instant Conversion

Click convert or just type — the result appears instantly with live preview.

3

Copy & Use

Copy the result or CSS variable with one click. Share via URL.

Why Developers Love This Tool

Instant Results

Real-time conversion as you type. No waiting, no page reloads.

100% Client-Side

All processing happens in your browser. No data is sent to any server.

CSS Variable Output

Get copy-ready CSS custom property syntax alongside raw values.

Shareable URLs

Generate pre-filled links to share specific conversions with your team.

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What is PX to REM Conversion?

Converting from <strong>PX</strong> to <strong>REM</strong> is a common task in web development. Convert pixel values to REM units based on configurable root font size. This tool provides instant, accurate results with no installation required — everything runs directly in your browser.

How the Conversion Works

Pixel to REM conversion divides the pixel value by the root font size (typically 16px). For example, 24px ÷ 16 = 1.5rem. This relative unit ensures your design scales with user preferences and browser settings.

Common PX to REM Conversions

  • 12px = 0.75rem — small/caption text
  • 14px = 0.875rem — body text (compact)
  • 16px = 1rem — default body text
  • 20px = 1.25rem — subheadings
  • 24px = 1.5rem — h3 headings
  • 32px = 2rem — h2 headings

Why Use This Converter?

  • Instant results — paste a value and get the converted output immediately.
  • Copy-ready CSS — one-click copy with properly formatted syntax.
  • Shareable URLs — pre-fill values via URL for easy team sharing.
  • No installation — works in any browser, on any device.

FAQ

How accurate is this PX to REM converter?

Our converter uses mathematically precise algorithms to ensure 100% accuracy. All conversions are performed client-side with no rounding errors beyond standard floating-point precision.

Is this tool free to use?

Yes, completely free with no registration required. All processing happens in your browser.

Can I share my conversion results?

Yes! Click the "Copy shareable link" button to generate a URL that pre-fills your input value, making it easy to share specific conversions with teammates.

Converters