How long does it take to learn Japanese? The short answer
There is no official figure for this question, only estimates. According to self-reported data from a Japanese language school, a learner without a kanji background needs roughly 325–600 study hours to reach N5, 950–1,700 hours for N3 and 3,000–4,800 hours for N1. Studying a steady 2 hours a day, that converts to about 5–10 months for N5, 16 months to 2.3 years for N3 and 4.1–6.6 years for N1.
This is a rough estimate to help you plan, not a commitment or a standard from any organisation. The N5 to N1 levels in this article are named following the JLPT framework. GoMe Nihongo is not affiliated with the Japan Foundation or JEES, the organisers of the JLPT. The sections below explain where the figures come from, how to convert them into calendar time and what makes them shift.
Estimated study hours for each level, N5 to N1
Where the figures come from
The source is the study-hour comparison table of the Japanese Language Education Center (JLEC), a Japanese language school, published between 2010 and 2015. It gives the average hours of full-time students in Japan to reach each level, counting classroom time, homework, preparation and self-study; they studied an average of 40 weeks a year, 32.4 hours a week. The table has two groups: students already familiar with kanji (for example students from Asian countries that use Chinese characters) and everyone else.
Hours for each level
N5: 250–450 hours for learners already familiar with kanji; 325–600 hours for everyone else. These are total hours counted from the start, not extra hours on top of the previous level.
N4: 400–700 hours for learners already familiar with kanji; 575–1,000 hours for everyone else. These are total hours counted from the start, not extra hours on top of the previous level.
N3: 700–1,100 hours for learners already familiar with kanji; 950–1,700 hours for everyone else. These are total hours counted from the start, not extra hours on top of the previous level.
N2: 1,150–1,800 hours for learners already familiar with kanji; 1,600–2,800 hours for everyone else. These are total hours counted from the start, not extra hours on top of the previous level.
N1: 1,700–2,600 hours for learners already familiar with kanji; 3,000–4,800 hours for everyone else. These are total hours counted from the start, not extra hours on top of the previous level.
Which column to use
If your first language uses Chinese characters in daily life (such as Chinese), you are closer to the first group; if not, the second group is the safer benchmark for planning. Speakers of Korean or Vietnamese, whose languages contain many Sinitic words even though the characters are not written daily, may fall between the two columns. This article has no separate figures for individual first languages.
Converting hours to calendar time by daily study hours
How to calculate
A simple method: divide the hours needed by the hours you study each day, then divide by about 30 days a month, assuming you study every single day. The lines below use the “everyone else” column (more hours) and are rounded.
Results for each level
N5 (325–600 hours): about 11–20 months at 1 hour a day; 5–10 months at 2 hours; 4–7 months at 3 hours.
N4 (575–1,000 hours): about 19 months to 2.7 years at 1 hour a day; 9–16 months at 2 hours; 6–11 months at 3 hours.
N3 (950–1,700 hours): about 2.6–4.7 years at 1 hour a day; 16 months to 2.3 years at 2 hours; 10–19 months at 3 hours.
N2 (1,600–2,800 hours): about 4.4–7.7 years at 1 hour a day; 2.2–3.8 years at 2 hours; 18 months to 2.6 years at 3 hours.
N1 (3,000–4,800 hours): about 8.2–13.2 years at 1 hour a day; 4.1–6.6 years at 2 hours; 2.7–4.4 years at 3 hours.
Two cautions when reading the results
Two things to remember. First, real days usually include days off, which stretches the time beyond the calculation. Second, studying very few hours a day for many years is usually less effective than the cumulative figure suggests, because more of it is forgotten.
Why your own number may differ
These figures come from full-time students in Japan, with lessons every day and exposure to Japanese outside the classroom. Self-taught learners abroad usually get less exposure and need longer for the same number of hours at the desk; we have no separate figures for this group.
The main factors that shift the figure: your kanji background (including Sinitic words in your first language), your first language and earlier language-learning experience, your goal (reading, listening or speaking), the quality of your study time (focused, reviewed at the right moment or crammed) and whether you use Japanese outside study time.
Also remember that an N level measures only part of your ability. The exam tests vocabulary, kanji, grammar, reading and listening, with no speaking or writing section. Someone who passes N3 may still not speak fluently, and the reverse is also true.
Compared with the US Foreign Service Institute benchmark
The US Department of State places Japanese in the hardest group (Category IV) for English speakers, at about 88 weeks, or 2,200 classroom hours, to reach professional working proficiency in speaking and listening (ILR 3). The page also gives a typical week as 23 hours in class and 17 hours of self-study, and stresses that real time varies with aptitude, prior language-learning experience and time in class.
Don't put the two figures side by side as if they were the same yardstick. FSI measures speaking and listening at professional working level for English speakers in an intensive training programme, whereas JLEC's data are the hours to each N level for students in Japan. They only show the same thing: Japanese takes hundreds to thousands of hours, not a few weeks.
Practical ways to shorten the journey
Regular daily study matters more than a lot on one day. Choose a number of hours you can keep up for many months, then compare it with the lines above to find your own timeline.
Learn kana early so you can read real words. Use radicals and familiar Sinitic words from your own language (if you have them) to remember kanji, and review at spaced intervals so older characters come back at the right time instead of being learned and forgotten. Listening to and reading Japanese at a level where you understand most of it matters as much as memorising.
Set goals by what you want to do in Japanese (read notices, work, everyday conversation) and only then pick the matching N level. N1 is needed only when work or study truly demands it.
Frequently asked questions
Can I reach N3 in one year of study? At 2 hours a day, the estimate above puts N3 at about 1.3 to 2.3 years for a learner without a kanji background, so one year would be tight. Learners already familiar with kanji, or those who study more hours, may be faster. This is an estimate, not a certainty.
Are these hours official? No. They are self-reported data from a Japanese language school, not published by the exam organisers. Treat them as a reference point for your own plan.
Where should I start? With the hiragana and katakana alphabets, then basic vocabulary and kanji. GoMe Nihongo lays out a learning path and a spaced-review schedule so you know what to study and review today.
Source: Japanese Language Education Center (JLEC): JLPT Study Hour Comparison Data 2010-2015 (web.archive.org copy, accessed 30 September 2026) (30 Sept 2026)
Source: U.S. Department of State: Foreign Language Training, section "NFATC's Experience with Language Learning" (accessed 30 September 2026) (30 Sept 2026)