Kálmán was born on October 27th, 1918 in Sáp.1 Kálmán's father was Géza Körtvélyesi and his mother was Jolán Balogh. His paternal grandparents were Lajos Körtvélyesi and Mária Szabó. He had two brothers named Jenő and Géza. He was the oldest of the three children. He died at the age of 80 on September 16th, 1999.