  The W-mass measurements from LEP and the results of a global fit of the
Standard Model parameters to the electroweak data are presented. Comprehensive
studies of experimental systematic effects allowed a measurement of the W mass
with an accuracy of better than half a permill. Especially the recent
improvements in the LEP energy calibration, the modelling of the hadronisation
process and the understanding of Bose-Einstein correlations and colour
reconnection effects are discussed. The fit of the Standard Model parameters to
all electroweak measurements verifies the self-consistency of the theory. The
combination of all electroweak data yield information on the mass of the still
undiscovered Higgs boson, $m_H$.
