Everyday Utilities
PX to REM Converter: Convert Pixels and REM Units Online
Convert CSS pixels to rem units and back with a custom base font size. Perfect for responsive design and accessibility work.
Runs in your browser — your text is never uploaded or stored.
px
rem
Common: 12px = 0.75rem · 16px = 1rem · 24px = 1.5rem · 32px = 2rem
How to Use
- 1.Set the root font size (default 16px).
- 2.Type any pixel value to see the rem equivalent — or type rem to see pixels.
- 3.Copy the converted value straight into your stylesheet.
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FAQ
What is the default base font size?
Browsers default to 16px, which is the value used here unless you override it.
When should I use rem over px?
rem scales with the user's browser font-size preference, which is better for accessibility and responsive design.
Does it support decimals?
Yes — enter any decimal value. Results are shown to four decimal places.
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