Language learning hours.

Quick answer

The U.S. Foreign Service Institute lists four language categories: Category I, 24 to 30 weeks (552 to 690 class hours; French and Spanish are 30 weeks, 690 hours), Category II, about 36 weeks (828 hours), Category III, about 44 weeks (1,012 hours) and Category IV, 88 weeks (2,200 hours; Arabic, Chinese, Japanese, Korean). Divide the hours by your weekly study time to get weeks.

Worked example

Spanish is Category I at 30 weeks, which is 690 class hours. You study 10 hours a week and have already done 100 hours. Hours left: 590. At 10 hours a week that is 59 weeks, about 13.6 months. Starting 8 October 2026, 59 weeks later is 25 November 2027. Studying Japanese (Category IV, 2,200 hours) at the same pace from zero is 220 weeks, about 4.2 years.

How it works

Hours left = FSI hours - hours already studied (not below zero). Weeks = hours left / hours per week. Category I covers 24 to 30 weeks (552 to 690 hours), so the tool lists it as two choices, one per week count that FSI prints next to each language. The other categories are single figures.

The State Department page says the timelines show the time usually expected for a student to reach an integrated Speaking + Listening score of 3 on the Interagency Language Roundtable (ILR) scale, that actual time varies with natural ability, prior language-learning experience and classroom time, and that a typical week is 23 hours in class plus 17 hours of self-study. The hours here are the class hours only as FSI prints them (weeks x 23 for Categories I to III; FSI prints 2,200 for Category IV, which is more than 88 x 23 = 2,024), so your own total study time to the same level may be higher.

Treat the result as a rough planning guide. It is not a promise for any learner, method or app.

Sources (each page opened 2026-10-08):

• Foreign Language Training, U.S. Department of State: the four categories, the weeks and class hours for each, the language lists and the 23-hour week
• Language Difficulty Ranking, Effective Language Learning: secondary reference only; its older five-category figures differ from FSI's current page

FAQ

How many hours does it take to learn Spanish?

FSI lists Spanish in Category I at 30 weeks, which is 690 class hours (23 hours a week), for an English speaker to reach a Speaking + Listening score of 3 on the ILR scale.

How many hours to learn Japanese, Chinese, Arabic or Korean?

FSI lists these in Category IV at 88 weeks, which is 2,200 class hours.

Is this fluency?

No. The target is an integrated Speaking + Listening score of 3 on the ILR scale, which is general professional proficiency. The figure does not describe other levels.

Do app or self-study hours count the same as FSI classroom hours?

Not necessarily. The figures are FSI class hours, and FSI says a typical week also includes 17 hours of self-study, so use them as a rough guide and expect your pace to differ.

Why is Category I split into two choices?

FSI lists Category I as 24 to 30 weeks (552 to 690 class hours). Danish, Dutch, Italian, Norwegian, Portuguese, Romanian and Swedish are 24 weeks; French and Spanish are 30 weeks. The tool lets you pick either.