The purpose of the CODATA Task Group on Fundamental Constants is "to periodically provide the scientific and technological communities with a self-consistent set of internationally recommended values of the basic constants and conversion factors of physics and chemistry based on all of the relevant data available at a given point in time."

Established in 1969, the CODATA Task Group on Fundamental Constants (TGFC) is one of the original Task Groups of CODATA. It is not constituted under the auspices of the BIPM, but because of the close linkage between the SI units and fundamental constants, it enjoys a close relationship with the CCU and the BIPM; this portal, created as a working website for the Task Group, is an example. The public section of this website provides information about the activities of the Task Group on Fundamental Constants including meeting dates, meeting minutes, membership and archived documents.

The next meeting of the TGFC will take place on 13 September 2010 at the BIPM.