Developer Tools
PX ↔ REM / EM Converter
Convert between pixels, REM, and EM units. Set a custom root font size for accurate results.
px
| px | rem | em |
|---|
Convert between pixels (px) and REM units instantly for responsive CSS development. Set a custom base font size, convert single values or bulk lists, and reference the handy conversion table.
Features
Bidirectional Conversion
Convert px → rem and rem → px with a single toggle.
Custom Base Font Size
Set any root font size (default 16px) to match your project's html font-size.
Bulk Conversion
Paste a list of pixel values and convert them all at once.
Reference Table
View a full conversion table for common pixel values from 1px to 96px.
How to Use
- Enter your base font size (typically 16px).
- Type a px or rem value in the input field.
- The converted value appears instantly.
- Use the bulk converter to convert multiple values at once.
FAQ
Why use REM instead of pixels?▾
REM units scale with the user's browser font size preference, making layouts more accessible and responsive.
What is the default REM base?▾
Most browsers default to 16px, making 1rem = 16px. Always verify your project's html font-size.
Common Conversions
- 16px = 1rem
- 24px = 1.5rem
- 32px = 2rem
- 14px = 0.875rem
- 12px = 0.75rem
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