How old was King Tut when he died?

King Tut is refer to Tutankhaten or Tutankhamun, an Egyptian prince who became king at the age of nine or ten and ruled Egypt from ca.1333 BC to 1323 BC. He died at the age of 18-19 however the reason of his death is still unknown. One theory says he was killed. Another says died due to infection in broken leg. A recent research shows malaria symptoms in his remains. However cause of his death is still a matter of debate.