Is Indonesian hard to learn for English speakers?
Short answer: For a native English speaker, Indonesian is rated Category II by the US State Department’s FSI, taking about 900 class hours to reach professional working proficiency. That measures distance from English — grammar, vocabulary and writing system — not how “hard” the language is in any absolute sense.
Category II — tier 2 of 4 by FSI class hours (~900 hrs, full-time classroom)
The Foreign Service Institute classifies Indonesian as a Category II language, requiring approximately 900 hours of study for English speakers to reach professional working proficiency. This places it in the easier-to-moderate range compared to languages like Mandarin or Arabic, signaling that English speakers can make solid progress without facing the steepest learning curves.
Several factors contribute to Indonesian's relative accessibility. It uses the Latin alphabet, eliminating the need to master an entirely new writing system. While Indonesian belongs to the Austronesian language family—distinctly different from English's Indo-European roots—its grammar is notably straightforward. The language lacks complex verb conjugations, case systems, and gendered nouns that complicate many European languages. Pronunciation is also consistent and phonetic. The main challenges involve building vocabulary and mastering unfamiliar grammatical patterns like affixation, but these are manageable within the 900-hour timeframe for motivated learners.
What sets Indonesian apart
Indonesian is one of 5 languages in FSI’s Category II, at about 900 class hours. It keeps the Latin alphabet, shared with 34 other FSI-taught languages — no new script stands between you and the grammar and vocabulary work. It belongs to the Austronesian (Malayo-Polynesian) family, alongside 2 other languages on the list.
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About Indonesian
| Native speakers (L1) | 78.0M (source) |
|---|---|
| Language family | Austronesian (Malayo-Polynesian) |
| Primary regions | Indonesia |
| Writing system | Latin |
Speaker counts, language-family and region data from Wikipedia (Ethnologue figures), licensed CC BY-SA 4.0.
Common questions
How hard is Indonesian to learn for English speakers?
For a native English speaker, Indonesian is rated Category II by the US State Department's FSI — about 900 class hours of full-time study to reach professional working proficiency. The rating measures distance from English, not absolute difficulty.
What makes Indonesian easier or harder for English speakers?
The main factors are its Austronesian (Malayo-Polynesian) roots and the Latin writing system — FSI's rating bundles grammar, vocabulary overlap and writing system into one estimate of study time.
Also curious about
More Category II languages — the same FSI difficulty tier.
Hours to learn Indonesian → · How to approach it → · All 75 languages ranked by difficulty →
Hours and weeks are the canonical FSI figures for Category II, from the US State Dept FSI list (public domain), used verbatim and last verified June 2026. How we compile and re-verify this data.