So how long does it take to learn Japanese fluently?
And the answer is- it varies from man to man and there is no exact science regarding this. It completely depends on the method of learning, the right amount of practice, and many other factors.
The US Department of State reveals that Japanese is one of the hardest languages to learn for English natives. There are not many similarities in structure to English.
According to their estimation, it takes about 88 weeks of learning or 2200 hours to achieve fluency.