It depends on variables like the course you have chosen, the level you have opted for, your learning ability etc. While there are many levels and sub-levels in the journey of learning French, you can start at the beginner level course and reach advanced levels to get proficiency in French. There’s an added advantage if you have a platform where you can practically implement the language taught, like having a friend or a boss who can converse with you in French. On average, it’s safe to say that one can get French proficiency in 15 to 24 months provided there is good effort personally as well.