A Free Pixel to REM CSS Unit Converter Tool - Convert PX to REM instantly with live preview
Font size: 32px = 2rem
Base size: 16px
Current size: 32px → Closest Tailwind preset: text-3xl (30px)
| CLASS | PX | REM | PREVIEW | ACTION |
|---|---|---|---|---|
| text-xs | 12px | 0.75rem | Aa | |
| text-sm | 14px | 0.875rem | Aa | |
| text-base | 16px | 1rem | Aa | |
| text-lg | 18px | 1.125rem | Aa | |
| text-xl | 20px | 1.25rem | Aa | |
| text-2xl | 24px | 1.5rem | Aa | |
| text-3xl | 30px | 1.875rem | Aa | |
| text-4xl | 36px | 2.25rem | Aa | |
| text-5xl | 48px | 3rem | Aa | |
| text-6xl | 60px | 3.75rem | Aa | |
| text-7xl | 72px | 4.5rem | Aa | |
| text-8xl | 96px | 6rem | Aa | |
| text-9xl | 128px | 8rem | Aa |
PX (pixels) is a fixed-size unit, while REM is a relative unit that scales based on the root element's font size. 1 REM equals the font size of the html element (typically 16px by default). REM units are preferred for responsive design as they scale with user preferences.
Converting PX to REM offers several benefits: better accessibility, responsive design, consistent scaling across devices, and respect for user font size preferences. REM units make it easier to maintain and scale your website's typography and layouts.
To convert PX to REM, divide the pixel value by the base font size (usually 16px). For example: 32px ÷ 16px = 2rem. Our converter tool automates this calculation for you and even shows you the closest Tailwind CSS preset.
The default base size is 16 pixels, which means 1rem = 16px. However, you can customize this base size in our converter tool by clicking 'Show base font size settings' if your project uses a different root font size.
Yes, REM units have excellent browser support and work in all modern browsers. They've been supported since Internet Explorer 9, making them safe to use in production websites.
While REM is excellent for font sizes and spacing related to typography (margins, padding), you might want to use pixels for borders or very small details. For responsive layouts, you might also consider using percentage or viewport units (vw/vh).
Note: Our PX to REM converter tool makes these calculations instant and accurate, helping you maintain consistent typography across your web projects.
Quick reference for commonly used pixel values and their REM equivalents in web development, based on the standard base size of 16px = 1rem
| Pixels (px) | REM | Common Usage | Example |
|---|---|---|---|
| 12px | 0.75rem | Small text, footnotes | Aa |
| 14px | 0.875rem | Secondary text | Aa |
| 16px | 1rem | Base body text | Aa |
| 18px | 1.125rem | Large body text | Aa |
| 20px | 1.25rem | Subheadings | Aa |
| 24px | 1.5rem | Small headings | Aa |
| 32px | 2rem | Medium headings | Aa |
| 48px | 3rem | Large headings | Aa |
| Pixels (px) | REM | Common Usage | Example |
|---|---|---|---|
| 4px | 0.25rem | Tiny gaps, borders | ■ |
| 8px | 0.5rem | Small padding | ■ |
| 16px | 1rem | Standard spacing | ■ |
| 24px | 1.5rem | Component gaps | ■ |
| 32px | 2rem | Section spacing | ■ |
| 48px | 3rem | Large margins | ■ |
Pro Tip: These common conversions are based on a root font size of 16px. For different base sizes, use our converter tool above to calculate precise values.
Use these conversions as a starting point for your responsive design. Remember that REM units will scale proportionally when users adjust their browser's font size settings.