The 10.52 km² large communal area covers part of the Genevois. The eastern part of the area covers the valley of the Fornant, a right affluent of the Usses. From there, the commune area stretches over the fields and grasslands of Savigny up to the forested ridge of the Vuache where at an altitude of 1101 m the highest point of Savigny is reached. The northern border is formed by the wide mountain crest of the Montagne de Sion.