πŸ› οΈ Developer Tool

REM to PX Converter

Convert responsive REM units to fixed pixel values instantly. Perfect for understanding design specifications, mockups, and browser calculations.

✨ Instant Conversion
πŸ“‹ One-Click Copy
πŸ”§ Customizable Base Size
rem
px
Calculation based on a root font-size of
pixel.

πŸ“Š Common Conversions (Base: 16px)

4px0.25rem
8px0.5rem
12px0.75rem
14px0.875rem
16px1rem
18px1.125rem
20px1.25rem
24px1.5rem
28px1.75rem
32px2rem
36px2.25rem
48px3rem

πŸ’‘ Why Use REM?

  • βœ“Scales with user's browser font size preferences
  • βœ“Better accessibility for users with visual impairments
  • βœ“Easier responsive design and consistent spacing
  • βœ“Recommended by web standards and best practices

🎯 How It Works

REM Formula:Pixels Γ· Base Size = REM

Example:32px Γ· 16px = 2rem

Why Convert REM to PX?

Understanding pixel equivalents helps with design handoff, browser testing, and cross-team communication.

🎨

Design Handoff

Convert REM values to pixels when communicating with designers using pixel-based tools.

πŸ”

Browser DevTools

Understanding pixel values helps when inspecting elements and debugging layouts.

πŸ“

Design Specs

Design mockups often use pixels; this converter helps bridge the gap with your REM-based CSS.

πŸ“±

Responsive Testing

Calculate actual pixel sizes at different breakpoints for thorough testing.

🀝

Team Communication

Ensure consistent understanding of measurements across your development team.

βœ…

Quality Assurance

Verify that expected pixel dimensions match your responsive design calculations.

πŸ’» SCSS Mixin for Your Project

Copy and paste this SCSS function into your stylesheets to automatically convert PX values to REM in your code.

// SCSS Function to convert PX to REM
@function rem($px, $base: 16px) {
  @return ($px / $base) * 1rem;
}

// Usage examples:
// font-size: rem(24);        // 1.5rem
// padding: rem(16) rem(8);   // 1rem 0.5rem
// margin: rem(20);           // 1.25rem
// width: rem(100);           // 6.25rem

// In actual styles:
.heading {
  font-size: rem(32);         // 2rem
}

.button {
  padding: rem(12) rem(24);   // 0.75rem 1.5rem
  border-radius: rem(8);      // 0.5rem
  font-size: rem(16);         // 1rem
}

.card {
  padding: rem(20);           // 1.25rem
  margin-bottom: rem(16);     // 1rem
  border-radius: rem(12);     // 0.75rem
}
Copy the SCSS mixin above

✨ Pro Tips

  • β†’Customize the $base parameter to match your project's root font size
  • β†’Use rem(16) instead of manually calculating 1rem
  • β†’Works with multiple values: margin: rem(8) rem(16)

🎯 Alternative Approach

  • β†’If your base is always 16px, simplify to: @function rem($px) { @return ($px / 16) * 1rem; }
  • β†’For design systems, consider creating a scale: $spacing: (8, 16, 24, 32, 48)
  • β†’Combine with variables for maximum flexibility and maintainability
✦
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