Fonts in HTML and CSS

There's also a page for dynamic side by side comparison of different fonts.

The font tag in HTML allows you to size fonts using a number from 1 to 7.

CSS allows you to use amongst others points and pixel sizes.

How do they compare?

Comparison

1 vs 10px, 7pt, 8pt

2 vs 10pt

3 vs 12pt

4 vs 18px, 13pt, 14pt

5 vs 18pt

6 vs 24pt

7 vs 36pt

HTML Font Sizes

CSS Point Sizes

CSS Pixel Sizes