„In sechs Monaten zu B2!“ The ad follows you around the internet. You've been learning for a year and a half, alongside a full-time job, and you still freeze when a colleague asks something unexpected. Either the ad is lying, or you're doing something wrong.
Mostly, the ad is lying. How long does it take to learn German? The most reliable number comes from the school that trains US diplomats, and it's longer than any course brochure. But the same research on learning also shows why some people get much further with the same hours. This guide gives you the honest number, what it means with a job, and the three methods that make your hours count.
The honest number: 36 weeks of full-time study
The US Foreign Service Institute (FSI) ranks languages by how long English speakers usually need. German is in Category II: about 36 weeks and 828 class hours to reach professional working proficiency in speaking and listening[1]. A typical FSI week is 23 hours in class plus 17 hours of self-study, so the full picture is around 40 hours a week, for nine months.
Two things to keep in mind:
- That's a high target. Professional working proficiency on the FSI's scale means you can work in the language, not just get by. B1 and B2 come earlier on the way.
- The FSI itself says it varies: natural ability, earlier language learning and time in class all change the timeline[1].
What that means if you work full time
Diplomats study full time. You don't. Here is the rough arithmetic, using the FSI's 36 weeks of about 40 hours as the endpoint:
| Hours of German per week | Time to the FSI's endpoint (rough) | What that looks like |
|---|---|---|
| 3 hours | About 9 years | One evening class, nothing else |
| 7 hours | About 4 years | One hour a day |
| 10 hours | About 3 years | A course plus daily practice |
| 15 hours | About 2 years | Serious daily study next to a job |
This is not meant to discourage you. It explains why the gap between B1 and B2 feels so long, and why the way you spend each hour matters more than the number of hours. Most people don't fail because they study too little; they fail because they study in a way that doesn't turn into speaking.
Why some people get there faster
Same city, same course, same hours, and one colleague is chatting in German meetings while another still can't. The difference is rarely talent. It's usually three habits, each backed by decades of research on memory.
1. They recall instead of re-reading
In a well-known study, students who practised recalling a text remembered much more of it a week later than students who spent the same time re-reading it, even though re-reading felt more effective to them[2]. Psychologists call this the testing effect: pulling something out of memory strengthens it more than putting it in again.
For German, recall means producing the sentence yourself. Covering the German column of your vocabulary list is recall. Answering a question out loud without notes is even better recall. Reading your textbook again is not.
2. They spread practice over days
A large review of hundreds of experiments found that practice spread over time beats the same amount of practice crammed together, for remembering words and facts[3]. This is the spacing effect, and it's the reason ten minutes a day beats an hour on Sunday.
3. They speak, not just study
Speaking is where recall and spacing come together. When you answer a question in German, you retrieve words, endings and word order at the same time, under a little pressure. That's what a meeting or a job interview asks for. Grammar exercises train recognition; speaking trains production, and production is what you need at work.
A realistic weekly plan when you work full time
You don't need four hours a day. You need a plan that survives a busy week. One that works for many working learners:
| When | What | Time |
|---|---|---|
| Every weekday | Answer one work question out loud, find two mistakes, say it again | 10 minutes |
| Every weekday | Recall ten words or phrases from last week, out loud | 5 minutes |
| Twice a week | A class, a tutor or a language exchange | 60 minutes |
| Once a week | Use German at work on purpose: a coffee chat, a question in a meeting | 15 minutes |
| Weekend | Review the mistakes of the week and say the corrected sentences again | 20 minutes |
That's about four hours a week, much of it in ten-minute pieces. It won't take you to the FSI's endpoint quickly, but it will move you every week, because almost every minute is recall or speaking.
What ten minutes of speaking practice looks like
"Speak every day" is easy advice and hard to do alone. Here is one session, start to finish.
Minute 1: pick a question you could hear at work this week, for example „Was haben Sie letzte Woche bei der Arbeit gemacht?“
Minutes 2 to 3: answer out loud without notes and record it. A typical first attempt:
Letzte Woche ich habe eine Präsentation vorbereitet, weil wir haben einen neuen Kunden. Dann ich habe mit dem Team über das Budget gesprochen.
Minutes 4 to 6: listen once and find two mistakes, not ten. Here: the verb isn't second after „Letzte Woche“ and „Dann“, and it isn't at the end after „weil“.
Minutes 7 to 10: say it again with those fixed, twice:
Letzte Woche habe ich eine Präsentation vorbereitet, weil wir einen neuen Kunden haben. Dann habe ich mit dem Team über das Budget gesprochen.
Then write the two corrected sentences somewhere you'll see them again in three days. That's recall, spacing and speaking in one session, and it fits into a coffee break.
Milestones: how to know you're moving from B1 to B2
The CEFR describes B2 as speaking fluently enough that talking with native speakers is no strain for either side[4]. At work, that becomes concrete. Check yourself every few weeks:
- You can explain what you do in your job for a minute without searching for words.
- You can disagree in a meeting in German: „Da sehe ich das etwas anders, weil …“
- You can make a short phone call to a doctor or an office without preparing every sentence.
- You can tell a story from last week in the past tense with the verb in the right place.
- When you don't understand, you ask in German instead of switching to English.
If you can tick three of five, you're closer to B2 than your certificate says. If interviews are your next step, the 15 German job interview questions with model answers are a good milestone test.
Mistakes that slow working learners down
- Only input. Podcasts and Netflix help your listening, but listening alone rarely makes you speak.
- Only apps. Good for habit and vocabulary, weak for spontaneous speaking.
- Never reviewing your own mistakes. The fastest progress comes from the sentences you got wrong, said again correctly a few days later.
- Waiting until it's perfect. Speaking with mistakes and fixing them is how mistakes disappear.
- Switching to English to be polite. Your colleagues mean well. Ask them to stay in German for the first five minutes of lunch.
So how long will it take you?
If you need German for a job, aim for the level the job needs, not for perfection. For many roles that's B2; for some, B1 is enough, and the guide is B1 German enough to work in Germany? shows which. Then spend your hours where they count: recall, spacing and speaking out loud, every day.
That's the method MyBeruf is built on. You answer a real work question out loud, it marks only your own mistakes in your own sentence, and brings them back days later until you say them right. Ten minutes a day, spaced, spoken.