px-based fonts

Hello,

In the two checkpoints below, WCAG 2.0 refers to pt-based fonts (14pt and
18pt).  Is there a set of equivalent px-based fonts that can be used
instead?
  *        1.4.3 Contrast (Minimum): The visual presentation of text and
  images of text has a contrast ratio of at least 4.5:1, except for the
  following: (Level AA)
  *        1.4.6 Contrast (Enhanced): The visual presentation of text and
  images of text has a contrast ratio of at least 7:1, except for the
  following: (Level AAA)

Jennison


-- 
Jennison Mark Asuncion
Co-Director, Adaptech Research Network <www.adaptech.org>
LinkedIn at <www.linkedin.com/in/jennison>