 Fischer-Hjalmars also served as chair of the International Council of Scientific Unions' Standing Committee on the Free Circulation of Scientists.Fischer-Hjalmars's parents were civil engineer Otto Fischer and Karen Beate Wulff.She received her bachelor's degree in 1939 (pharmacy), a master's in 1944 (physics, chemistry and mathematics), and continued with postgraduate, receiving her ”licentiat” in mechanics in 1949, and another in chemistry, in 1950.