Wie lange dauert es, Farsi zu lernen?
How long does it take to learn Farsi?
Half a year for the first use, two years for a solid basis, infinite for Persian/Farsi at a high to highest level
How long it takes to learn a language depends on various factors such as the intensity with which you learn, your previous language skills, your motivation, your diligence etc.. And it depends on the language itself.
Persian/Farsi does not have a complicated vocabulary - which means that a course can quickly enable you to cope with everyday situations using simple sentences and basic vocabulary ((advanced) A1). You can learn a lot of the essentials in half a year.
However, with Persian/Farsi, the more you learn, the more complex and refined the language becomes. In terms of the learning process, this means that you will probably have to reckon with two years (with two lessons per week) until you are reasonably confident at level A2 of the Common European Framework of Reference for Languages*.
And as with any language, the learning phase never ends when it comes to fine-tuning and achieving a really good command of the language.
*Information on the European Framework of Reference for Languages can be found athere.