Ftan has an area, as of 2006, of 43.1 km2 (16.6 sq mi). Of this area, 40.6% is used for agricultural purposes, while 15.4% is forested. Of the rest of the land, 1.2% is settled (buildings or roads) and the remainder (42.8%) is non-productive (rivers, glaciers or mountains).
The municipality is located in the Suot Tasna sub-district of the Inn district on a terrace above the left bank of the Inn river. It consists of the village sections of Ftan Grond and Ftan Pitschen. Until 1943 Ftan was known as Fetan