FSI-based estimate
How long to learn a language?
Approximate FSI classroom hours for native English speakers, turned into a weekly plan you can actually keep.
Estimates assume native English speakers (FSI framing).
FSI-based estimate
Approximate classroom hours
~600–750 hours
FSI Category I — closer to English
At your pace
About 643 weeks (~148 months) at 70 min/week
Rough VoiGu 5-minute time map
≈ 7,200–9,000 lessons total · about 14/week at this pace (time map only)
VoiGu lessons are speak-first and about 5 minutes each. Rough time-on-task map only — FSI classroom hours are not 1:1 with Gu minutes; finishing lessons is not a proficiency guarantee.
Based on U.S. Dept of State / FSI Foreign Language Training. View FSI source
Approximate classroom hours for native English speakers to reach professional working proficiency (ILR 3), based on U.S. Department of State / Foreign Service Institute (FSI) language training categories. FSI figures reflect intensive classroom programs; self-study time varies. This is not a fluency guarantee and is not a CEFR placement. Classroom hours in intensive FSI programs are not the same as self-study or Gu lesson minutes one-for-one.
Build your plan on VoiGu
Spanish · ~600–750 guided class hours*
At 70 min/week → ~643 weeks · ≈ 7,200–9,000 × 5-min lessons