freetexttospeech.org can convert any text into human like voice within seconds, it is totally free of charge, and users can use the service for educational or even commercial purposes without any issues, wether you want to use it for your YouTube videos, Sales and social media videos, E-learning materials, users are allowed to use it for these usecases while they are not abusing the service.

Visit: https://freetexttospeech.org/