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Unit converters
CSS px / rem / em converter
Convert CSS pixels and relative font units with an explicit base size.
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About this tool
Convert CSS pixels and relative font units with an explicit base size.
How to use
- Enter value and base font size in pixels in the form.
- Choose the available options, then run css px / rem / em converter.
- Review the result and copy or download it for your work.
Use the root font size for rem, or the relevant inherited element font size for em.