How long does it take to learn German?What the research says
Based on the US Foreign Service Institute's published figure and real course formats in Berlin.
What the research actually says
The US Foreign Service Institute (FSI) classifies German as a Category II language for English speakers — harder than French or Spanish, but significantly easier than Arabic, Japanese, or Chinese.
FSI: about 36 weeks (828 class hours) to professional working proficiency
That is the FSI's figure for its own full-time students, who spend about 23 hours a week in class and 17 hours on self-study. It is measured on the US government's ILR scale (level 3), not on A1–C2, and the FSI publishes no hours per CEFR level.
How long to reach B2?
B2 is the practical target for most learners — professional working proficiency. Here's a realistic timeline depending on how intensively you study.
Intensive Course
~20 hours/week in the classroom. The fastest route — common for people relocating to Berlin and studying full-time.
Requires significant daily commitment. Living in Germany while studying adds natural immersion that speeds progress further.
Standard Group Course
~10 hours/week. The most common format — morning or afternoon group classes, 4–5 days a week.
Progress is steady and sustainable. Works well alongside part-time work or family commitments.
Evening / Weekend Class
3–4 hours/week. Fits around a full-time job. Progress is real but slow — motivation and consistency matter a lot.
Best paired with self-study: apps, podcasts, German TV. Living in Germany helps significantly.
Factors that make you faster (or slower)
The FSI figure is an average. Here's what moves you above or below it.
Your native language
Dutch, Swedish, Norwegian, and Danish speakers learn German significantly faster — the shared Germanic roots give a big head start. Romance language speakers (French, Spanish, Italian) take a little longer, but still benefit from European vocabulary overlap. Speakers of non-Indo-European languages (Arabic, Chinese, Turkish) typically need closer to the upper end of the FSI estimate.
Immersion — living in Germany
This is the single biggest accelerant. When you live in Berlin, every trip to the supermarket, every official letter, every conversation with neighbours adds real-world practice on top of your classroom hours. Students studying in Berlin typically progress 30–50% faster than students doing equivalent courses in their home country.
Consistency over intensity
Language acquisition depends on spaced repetition. Studying 5 hours a week consistently for a year beats an intensive crash course followed by months of no practice. If you take breaks of several months, expect regression — especially in the earlier levels.
Age and prior language learning
Adults learn more efficiently in the classroom than children — they understand grammar rules faster and study intentionally. However, children in immersion environments often outpace adults over the long term because they absorb language naturally. If you've successfully learned another foreign language before, you already know how to learn a language — that meta-skill is genuinely useful.