We present PAREVAL package consisting of a number of Mathematica modules used to re-evaluate basic CODATA:1998 recommended fundamental physical constants (FPC). Values of the basic FPC-1998 with the positive defined correlation matrix and a number of functions for the FPC usage can be found therein. Among other PAREVAL functions there are functions for energy levels of hydrogen and deuterium, electron and muon magnetic moment anomaly and muonium ground-state hyperfine splitting.