Convert between px, rem and em with a custom root font size, including a batch list mode.
rem is always calculated relative to this root font-size.
em is calculated relative to this separate parent/context font-size — not the root size above.
16
1
1
No comments yet. Be the first!
The PX/REM/EM Converter converts between the three CSS units — rem is relative to the root font-size, while em is relative to a separately adjustable context font-size.
rem is always relative to the root element's (usually html) font-size, no matter how deeply nested. em is relative to the current element's (or its parent's) font-size, and compounds when nested. This tool deliberately keeps their input fields separate so the two are never conflated.
Enter one number per line; decimals are supported. A line that can't be parsed is clearly flagged as an error in the results table, rather than being silently skipped or treated as 0.
No. V1 only converts individual values — parsing and auto-converting a whole CSS file is a planned V2 feature, not included here.
Realtime backdrop blur & translucent border code
