He was born in Oslo.
He was elected to the Norwegian Parliament from the Market towns of Sør-Trøndelag and Nord-Trøndelag in 1954, and was re-elected on one occasion. He had previously served in the position of deputy representative during the term 1950–1953.
Lange was a member of Trondheim city council in 1950–1951 and 1951–1954, and a member of its executive committee in the periods 1945–1947, 1947–1950 and 1954–1955. He later moved and worked as a physician in Oddernes and Vest-Agder county.