Px to Rem Converter – Convert Pixels to Rem Free Online
Convert pixels to rem and rem to pixels. Set custom base font size. Free online px to rem converter.
Default browser base is 16px
px → rem
rem → px
Common sizes reference (base 16px)
Bulk converter (one px value per line)
Frequently Asked Questions
rem (root em) is a CSS unit relative to the root element's font size. If the root font size is 16px, then 1rem = 16px, 1.5rem = 24px, etc. It scales with user browser settings, making it better for accessibility than px.
Most browsers default to 16px. You can change the base in this tool to match your project's root font size if it differs.
Enter one px value per line in the Bulk Converter section. The tool converts all of them at once and you can copy the results.
No. All conversion happens in your browser. Nothing is sent to any server.
What is Px to Rem Converter?
A px to rem converter converts pixel values to rem units for CSS. Rem (root em) is a relative CSS unit based on the root element's font size (typically 16px). Using rem instead of px makes websites more accessible and easier to scale.
How to Use Px to Rem Converter
- 1Enter the pixel value to convert to rem.
- 2Or enter a rem value to convert to pixels.
- 3Adjust the base font size if your root font size is not 16px.
Key Features
- ✓Px to rem conversion
- ✓Rem to px conversion
- ✓Customizable base font size
- ✓Instant calculation
Benefits
- →Write accessible CSS with relative units
- →Scale typography consistently
- →Convert design specs from px to rem
Why Use Irreva for Px to Rem Converter?
Frequently Asked Questions
What is rem in CSS?
Rem (root em) is a CSS unit relative to the root element's font size. If the root font size is 16px, then 1rem = 16px, 2rem = 32px, etc.
Why use rem instead of px?
Rem units respect the user's browser font size preferences, making websites more accessible.
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