How did Odysseus escape from calypso?

Odysseus escaped from Calypso with the help of the god Hermes, who was sent by Zeus to command Calypso to let him go. Despite her deep love for Odysseus, Calypso reluctantly agreed and provided him with materials to build a raft. After spending several years on her island, Odysseus set sail and eventually made his way back to Ithaca.