How long does it take to learn German?
The US Foreign Service Institute places German in Category II, estimating 900 class hours to reach professional working proficiency. That figure describes full-time intensive instruction for native English speakers with a track record of learning languages, so it is a floor for a favourable case rather than a typical outcome — but it is the most soundly based number available, and it is the FSI's, not ours.
Key figures
- FSI estimate
- 900 class hours
- Core German words in InputDojo
- 207
- German grammar topics in InputDojo
- 6
Category II — above Spanish and French, below Japanese and Chinese.
One category harder, and you can see why
German is the only major Western European language the FSI moves out of its fastest group, at 900 hours against 600 to 750. The vocabulary is if anything friendlier than French — Hand, Wasser, Buch need no explanation — so the extra 200 hours are entirely structural: four cases, three genders with no reliable way to predict them, adjective endings that depend on both, and verb-final word order in subordinate clauses. None of it is conceptually hard. All of it has to become automatic before you can speak without pausing to assemble the sentence.
What the FSI number does and does not mean
The estimate comes from diplomatic language training: small classes, full days, motivated adults selected partly for aptitude, and immersion alongside. Almost nobody studying independently matches those conditions, so treat 900 class hours as a lower bound under ideal circumstances. The more useful reading is comparative — it tells you reliably that German sits where it sits relative to other languages, which is what most people are really asking.
Hours are the wrong unit anyway
Two people can log identical hours and end up in very different places, because an hour of decoding sentences you barely understand and an hour of reading material pitched just above your level do not produce the same learning. What predicts progress is time spent understanding real language rather than time spent studying about it. The practical implication is to reach material you can mostly follow as early as possible, and then increase the volume.
The pages behind these numbers
Frequently asked questions
Why is German harder than Spanish for English speakers?
Not the vocabulary, which is closely related. The case system, noun genders and adjective endings are what the extra hours pay for.
How long to reach B1 in German?
Commonly around 350 to 400 hours of guided study, though published estimates vary and depend heavily on how much exposure sits outside the classroom.
Are German noun genders predictable?
Partly. Some endings reliably indicate gender, but a large share of common nouns have to be learned with their article.