Tool
REM to PX Converter
Convert rem units to pixels at any base font size.
Design Tools
What this tool does
Convert rem values to pixels using a configurable root font size (default 16px).
How to use
- Enter rem value.
- Set root font size if not 16px.
- View pixel equivalent.
Formula
px = rem × base font size
Examples
1.5rem at 16px root
Input: 1.5 rem
Output: 24 px
1.5 × 16 = 24 pixels.
Common use cases
- Communicate sizes to designers in px
- Verify responsive typography
- Convert rem spacing to px specs
FAQ
Why is base font size important?
Browsers default to 16px, but your site may override html font-size.
Can I convert multiple values?
Convert one value at a time or use spacing scale generator for lists.
Is this for font-size only?
Works for any CSS property using rem units.
Related tools
Last reviewed: 2026-05-23