How long does it really take to reach B2 in French?

The first answer you'll find online is "600 to 750 hours." That number comes from the US State Department's Foreign Service Institute, which trains diplomats. It's accurate for what FSI does and misleading for what most people are actually doing.

Here is the honest version of the timeline question, based on too much research and a moderate amount of personal pain.

The numbers people cite

*FSI classifies French as a Category I language (alongside Spanish, Italian, Portuguese, Romanian) and estimates 600–750 hours* to "general professional proficiency" (≈ B2 / C1). This is full-time classroom instruction, ~25 hours a week, with native instructors.

*Alliance Française publishes its own hour estimates per CEFR level: roughly 80–100 hours for A1, 80–100 for A2, 100–150 for B1, and 150–200 to get from B1 to B2. Total to B2 by their estimate: 400–600 hours*.

Both numbers are real and both come from organisations that do this professionally. The reason a self-learner can put in 600 hours and still test below B2 isn't that the numbers are wrong — it's that the kind of hour matters.

Why FSI and Alliance numbers are optimistic for self-learners

An hour at FSI looks like this: a native teacher leads a small group, every minute is productive, errors are corrected in real time, you're forced to speak.

An hour of Duolingo looks like this: 80% review of words you already know, 15% mild productive challenge, 5% confusing sentence reordering, all in a closed system that never makes you generate spontaneous language.

Both count as "an hour of French." They are not the same.

A useful conversion: *one FSI hour ≈ two intensive self-study hours ≈ four casual self-study hours.* Rough, but it explains why the official numbers feel low.

Realistic timelines by context

Adjusting for what people actually do:

- *Full immersion + 4 hours/day of class (e.g., a language school in Lyon): 6–9 months to B2 for an Anglophone with no Romance-language background. - Intensive course, 15 hours/week, plus self-study: 12–18 months. - Weekly class (3 hours) + 30 min daily self-study: 2.5–4 years. - Self-study only, 30 min daily, mix of apps and reading: 3–5 years, and that's assuming you actually do the 30 minutes every day. - App-only (Duolingo, Babbel, no other input)*: probably never reach B2 cleanly. You'll hit a soft A2 / low B1 ceiling.

The last point isn't snark. Apps optimise for retention and feel-good progress, not for the spontaneous production you need at B2.

The variables that move the timeline most

In rough order of impact:

1. *Hours of comprehensible input per week. Reading and listening at i+1. Below 5 hours a week, progress stalls. 2. Hours of output per week. You need a real human and you need a regular slot. Even one hour weekly with an italki tutor doubles the rate at which you cement new structures. 3. Background languages. Spanish, Italian, Portuguese cut your timeline by maybe 30%. German cuts it by maybe 10–15%. Mandarin, very little. Other Romance languages help you guess vocabulary and recognise grammar shapes. 4. Consistency. Daily 25-minute sessions beat weekly 3-hour sessions, by a wide margin. Brains consolidate during sleep; spreading exposure across more nights builds more. 5. Age, sleep, stress, attention.* Hard to change. Worth noticing.

The first three matter much more than people think. The next two matter much more than people pretend.

A self-assessment

You're closer to B2 than you think if you can:

- Read a 600-word Le Monde opinion piece and explain the writer's argument in English without re-reading. - Hold a 20-minute conversation about a non-routine topic (a film you saw, an opinion on a current event) with a French speaker who is not a teacher. - Watch a French TV show with French subtitles and follow the plot. - Write a one-page email about a complex situation without using a translator.

If three of those four are true, you are probably scoring B2 already. Try a B2 sample text to confirm, and use the B2 study guide to fill any gaps.

The honest opinion

Most people who self-identify as B2 in French are B1.

The asymmetry comes from two places. First, language schools and apps inflate level claims because it sells courses. Second, learners measure themselves by their best moments ("I had this great conversation last week") rather than their worst ("I bombed the phone call to the doctor"). The CEFR levels are baseline-skill levels, not peak-performance levels.

A useful gut check: take a random French text you've never seen, paste it into the level checker, and read it. If B2 texts feel sometimes uncomfortable, you are not yet B2. You are well-developed B1, which is genuinely good and not the same thing.

The shape of the path

The progression is not linear. A1 → A2 → B1 each feel like clear steps. B1 → B2 feels like flat ground that gets steeper and then drops you on a plateau. You don't see the plateau end; you only notice afterwards that you've cleared it.

The plateau is shortest for learners who:

- Add input volume, not just intensity. - Output regularly to a human. - Resist switching methods every two months.

The Resources page lists the tutoring options and graded readers I lean on when planning a 12-month push.

What to take away

If you have a deadline (immigration exam, course start, job): work backwards from the exam date with a 12-month buffer, not 6. If you don't have a deadline: stop tracking hours and start tracking consecutive days of contact. That's the metric that maps to outcome.