Indonesian vs Standard Malay
Sound inventory comparison
What this means for learners
Indonesian and Standard Malay share 27 sounds — roughly 87% of Standard Malay's inventory overlaps with Indonesian. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 3 sounds found only in Standard Malay represent the greatest pronunciation challenge for Indonesian speakers. The adult brain tends to map unfamiliar sounds onto the closest native equivalent — a process that produces the characteristic "accent" of a second-language speaker. Learning to hear and produce these sounds as distinct requires focused ear training, not just repetition.
Conversely, Indonesian has 4 sounds not used in Standard Malay. Native Standard Malay speakers learning Indonesian will face the mirror-image challenge with these sounds.
Phoneme inventories from PHOIBLE. Data reflects one documented inventory per language; some variation exists across dialects and sources.