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PX to REM Converter

Convert pixels to rem units for responsive web design. Calculate rem values based on root font size. Free CSS unit converter.

Base Font Size

Pixels (px)

REM

Points (pt)

CSS

Preview

The quick brown fox jumps over the lazy dog

Common Conversions

Embed this tool on your website

× px

Theme

Color

Background

Border

Border Color

Border Radius

Show Branding Allow Fullscreen Compact mode Enable animations Transparent background

👁️ Preview

💡 Integration Tip

Copy the embed code and paste it into your website HTML. The responsive version adapts to all screen sizes automatically.

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ℹ️ About Px To Rem

Convert between pixels (px) and rem/em units for CSS. Essential for responsive web design. Customize base font size.

💡 Use Cases

Responsive web design

Converting design specs

Accessibility-friendly sizing

CSS framework development

Design to code translation

📋 How to use

Enter a value in px or rem

Set your base font size

View the conversion

Copy the CSS value

💎 Pro Tips

Default base: 16px = 1rem
rem is relative to root font size
em is relative to parent font size

❓ Frequently Asked Questions

Rem respects user font size preferences - better accessibility.

rem is relative to html/root; em is relative to parent element.

16px is browser default and most common base size.

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