He studied sculpture with Yannis Pappas, Thodoros Papayannis and Giorgos Nikolaidis, and ceramics with Giorgos Georgiou at the Athens School of Fine Arts (1976-1982).

His work has been shown in solo and group exhibitions in Greece and other countries, including Panhellenic exhibitions, the Meeting of Mediterranean Countries, which took place in Marseilles in 1985 and the Fukuhara University, Japan International Sculpture Competition (1996), in which he won first prize.

Carving marble and stone with immediacy and meticulous care, and more seldom using bronze, Kostas Dikefalos seeks to capture clear forms and creates biomorphic, geometric or aerodynamic compositions, exploiting the nature of his materials. Either solid or with apertures in pivotal points, these compositions extend vertically or horizontally, allowing the light to trace the surfaces and highlight the volumes, which often suggest continuous movement.

In his wide-ranging career, he has collaborated with other artists in making public monuments and has taken part in competitions; he has received the second prize for the Greek Resistance memorials in Amfissa (1986), Halkida (1987) and Holargos (1988).