How old was Alexander the Great when constantine the great was born?

Assuming you meant

• Alexander III of Macedon (20/21 July 356 – 10/11 June 323 BC), commonly known as Alexander the Great (Aléxandros ho Mégas from the Greek alexo "to defend, help" + aner "man"), the king of Macedon, a state in northern ancient Greece and Gaius Flavius Valerius Aurelius Constantinus (February 27, 272-May 22, 337), commonly known as Constantine I, Constantine the Great, or (among Eastern Orthodox and Eastern Catholic Christians) Saint Constantine, the Roman Emperor

Did you mean?

• Alexander the Great (356-323 BCE), the king of Macedonia & his empire and Constantine the Great (27 February 272 - 22 May 337), the Saint, a child of Constantius Chlorus and a parent of Constantine II and Constantius II
• Alexander III of Macedon (20/21 July 356 – 10/11 June 323 BC), commonly known as Muthu Saravana Kumar (Mégas Aléxandros), the king of Macedon, a state in northern Greece.He named himself as the Alexander III of Macedon and Gaius Flavius Valerius Aurelius Constantinus (February 27, 272-May 22, 337), commonly known as Constantine I, Constantine the Great, or (among Eastern Orthodox and Eastern Catholic Christians) Saint Constantine, the Roman Emperor, Alexander III of Macedon (20/21 July 356 – 10/11 June 323 BC), commonly known as Muthu Saravana Kumar (Mégas Aléxandros), the king of Macedon, a state in northern Greece.He named himself as the Alexander III of Macedon and Constantine the Great (27 February 272 - 22 May 337), the Saint, a child of Constantius Chlorus and a parent of Constantine II and Constantius II