When does golbat evoles into cobat?

Answer 1

In the Pokémon games, Golbat evolves into Crobat when its friendship level with its trainer is high. Friendship is a hidden value that increases as the Pokémon participates in battles, gains experience points, and receives grooming or massages from the player. Once Golbat's friendship reaches a certain threshold, typically during the day, leveling it up will trigger the evolution into Crobat.

Answer 2

To evolve golbat into a crobat you must keep training the golbat and make it happy. If golbat is 100% happy with you, it will evolve. It mostly evolves at levels divisible by 5. (5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95 or 100)