🌐 Language Hours Calculator
Based on FSI (Foreign Service Institute) research — estimate how long it will take to reach your target language level at your current study pace.
hrs/day
—
hours remaining to your goal
—
months
—
years
—
days of study
—
Projected completion date at your current pace
Hours per Level
Recommended Study Time Breakdown
FSI Language Difficulty Categories (for English speakers)
Cat. I
600–750h
Spanish, French, Italian, Portuguese, Dutch, Norwegian, Swedish, Danish, Romanian
Cat. II
~900h
German, Indonesian, Malay, Swahili, Haitian Creole
Cat. III
~1100h
Russian, Polish, Czech, Hungarian, Finnish, Greek, Hebrew, Persian, Turkish, Vietnamese, Thai, Hindi
Cat. IV
~2200h
Arabic, Chinese (Mandarin), Japanese, Korean
Important: These estimates are based on FSI averages for motivated adult learners in intensive classroom settings. Individual results vary significantly based on learning method, immersion, prior language experience, and learning aptitude. Self-study typically takes longer than intensive instruction.
About FSI Language Difficulty Ratings
The Foreign Service Institute (FSI) of the U.S. Department of State has been training diplomats in foreign languages since 1947. Their research provides the most comprehensive data on how long it takes English speakers to reach professional proficiency (approximately C1/ILR 3) in various languages.
FSI estimates are based on classroom instruction hours plus independent study. Hours to C2/mastery are roughly 30–50% more than hours to C1. The CEFR levels (A1 through C2) represent a progression from complete beginner to near-native mastery.