PX to REM Converter
Convert pixels to REM units for responsive CSS design
Result:
1 rem
Quick Reference (Base: 16px)
8px
= 0.500rem
12px
= 0.750rem
14px
= 0.875rem
16px
= 1.000rem
18px
= 1.125rem
20px
= 1.250rem
24px
= 1.500rem
32px
= 2.000rem
48px
= 3.000rem
64px
= 4.000rem
CSS Code:
/* Instead of: */ font-size: 16px; /* Use: */ font-size: 1rem;
Why Use REM Instead of PX?
- ✅ Accessibility: Respects user's browser font size settings
- ✅ Responsive Design: Scales proportionally across devices
- ✅ Maintainability: Change base font size to scale entire design
- ✅ Best Practice: Recommended by modern CSS standards
Understanding PX to REM Conversion
REM (Root EM) is a CSS unit relative to the root element's font size. By default, browsers set the root font size to 16px, making 1rem = 16px.
Conversion Formula
REM = Pixels ÷ Base Font Size (usually 16)Common Use Cases
- Font Sizes: Use REM for all typography
- Spacing: Margins and padding scale with font size
- Layout: Container widths and heights
- Media Queries: Responsive breakpoints
PX vs REM vs EM
- PX: Absolute unit, doesn't scale
- REM: Relative to root font size
- EM: Relative to parent element font size
✅ Best Practice:
Use REM for font sizes and spacing, PX for borders and small details, and % or viewport units for layout widths.