Input Font Size
16.00 px
Converted Values
Pixels
16
px
Root Em
1
rem
Em
1
em
Points
12
pt
Picas
1
pc
Centimeters
0.423
cm
Millimeters
4.233
mm
Inches
0.167
in
Common Font Sizes
Extra Small: 12px
Small: 14px
Base: 16px
Medium: 18px
Large: 20px
Extra Large: 24px
2X Large: 30px
3X Large: 36px
4X Large: 48px
Quick Reference
10px
0.625rem
12px
0.75rem
14px
0.875rem
16px
1rem
18px
1.125rem
20px
1.25rem
Font Size Units Explained
pxAbsolute pixels
Use: Precise design
remRoot em (16px base)
Use: Responsive web
emParent element based
Use: Relative scaling
ptPoints (print)
Use: Print design
%Percentage of parent
Use: Fluid layouts
Best Practices
Use rem for Web
Accessible and scalable
Set html to 16px
Standard browser default
Avoid px for Fonts
Use relative units