Font Size Converter

Convert between font size units

🔒 This tool runs fully in your browser. No files or data are uploaded.
-
px
-
em
-
rem
-
pt
-
%

How to Use

  1. Enter a font size value
  2. Select the unit you're converting from
  3. Set base size (for em/rem conversions, default is 16px)
  4. View all converted values

FAQ

  • What's the difference between px, em, and rem?
    px is absolute, em is relative to parent element, rem is relative to root element. Percentage is relative to parent element's font size.
Disclaimer: Conversions assume standard base sizes. Actual rendering may vary based on browser settings and CSS inheritance.