PX to REM Converter & Fluid Typography

Instantly convert Pixels (px) to REM, EM, and Percentage units.

Modern web development relies on relative units like REM for accessibility. This tool helps you migrate from fixed pixels to scalable units, and includes a Clamp Generator for creating fluid typography that scales smoothly from mobile to desktop.

Why use REM over PX?

Pixels are fixed units. If a visually impaired user increases their browser's default font size, pixel-based text will stay small. REM (Root EM) respects the user's settings, making your site accessible to everyone.

Fluid Typography

The CSS clamp() function lets you set a minimum, preferred, and maximum size. Instead of writing multiple media queries, you can make your headings scale linearly with the viewport width using our generator.

Common Conversions (16px Base)

12px0.75rem

14px0.875rem

16px1rem

18px1.125rem

20px1.25rem

24px1.5rem

32px2rem

64px4rem

Frequently Asked Questions

What is the default base size?

Most browsers (Chrome, Firefox, Safari) set the root font size to 16px by default. However, users can change this in their settings. Using REM ensures your layout adapts to this change.

EM vs REM: What's the difference?

REM is relative to the root (html) element. EM is relative to the parent element. This means EMs compound (e.g., a 2em font inside a 2em container becomes 4x the size). Generally, use REM for font sizes and EM for padding or margins on components.

PX to REM

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