In the graduation thesis we compared geoidal heights interpolated from Slovenian national geoid model SLOG2000, preliminary calculations of new model SLOG2010 and global geopotential model EGM2008, on the southern slope of Krvavec. Also compared are geoidal heights calculated from GPS measurements and trigonometric levelling. In the thesis we also present theoretical basics of height systems, geoid and different methods of geoid determination. We described the specific geoid models used and calculated deviations of those from »measured« values, then evaluated them by quality. On the basis of measurements we calculated the local geoid plane as a regression surface.