Check Indonesian spelling, grammar and punctuation free. Every issue underlined where it happens, with the reason attached.
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Indonesian grammar checker
Indonesian grammar checked with the reason attached
Paste Indonesian and every issue is underlined where it happens, labelled spelling, grammar, punctuation or style, with the reason attached. Indonesian is written in the Latin alphabet, and affixes, di- as prefix or preposition, the EYD spelling, reduplication are what a checker has to get right in it. This one shows the rule each time, not just the change, so you can accept the fix, ignore it, or learn from it.
How to check Indonesian grammar
Three steps. The third is the one most checkers leave out.
1
Paste or upload the Indonesian
Type, paste or drop in a document. Indonesian is already selected as the language on this page. If the text turns out to be something else, the detector says so and you can change it.
2
Read the flags
Every flag is underlined in the text and listed beside it. Spelling and grammar flags are errors; punctuation and style flags are judgements, and the label tells you which is which before you decide.
3
Accept, ignore or read why
Click a flag to see the fix and the rule behind it, then accept it or ignore it. Indonesian has rules that speech does not reveal, and the reason is there so the same error is not made twice.
What the checker looks at in Indonesian
The parts of Indonesian grammar and spelling where a checker has to know the language, not just the words.
AgreementIndonesian has no gender, no case and no agreement, and no verb conjugation for person or tense. Grammar is carried by affixes (me-, ber-, di-, -kan, -i, pe-...-an) and by word order, so an error is usually the wrong affix or a spoken form in a written text.
VerbsThe active prefix me- changes its shape with the following sound (menulis, membaca, mengambil, menyapu) and the passive uses di- (ditulis) or the pronoun before the bare verb (saya tulis). Time is shown by adverbs (sudah, akan, sedang), not by verb endings.
Spelling and diacriticsIndonesian uses the plain Latin alphabet with no diacritics; the letters é and e are written the same, which is why the dictionary marks them and the text does not.
PunctuationStandard punctuation. The current spelling rules (EYD, fifth edition, 2022) govern hyphens in reduplication (buku-buku, not buku2), the hyphen before a numeral suffix (ke-2, tahun 90-an), and the comma before conjunctions.
Capital lettersDays, months, languages, religions and nationalities are capitalised (Senin, Januari, bahasa Indonesia with a small b, orang Indonesia). Titles of respect are capitalised with a name (Bapak Budi) and lower case without.
Common mistakes in Indonesian writing
Five errors Indonesian readers notice at once, and what the checker does with each.
di as prefix or preposition
Dimakan (is eaten) is one word; di rumah (at home) is two. Joined before a verb, separate before a place. The same rule holds for ke- and ke.
Reduplication with a digit
Buku-buku, not buku2; anak-anak, not anak2. The hyphen is the standard; the digit is texting.
The me- prefix in the wrong form
Membaca (not mebaca), mengirim (not meirim), menyapu (with the s dropped), memukul (with the p dropped). The prefix assimilates to the first sound of the root.
Non-standard spellings
Aktivitas, praktik, risiko, analisis, apotek, nasihat: the KBBI spellings. Aktifitas, praktek, resiko, analisa, apotik, nasehat are common and wrong.
Spoken forms in formal writing
Nggak, gue, banget, kayak, and verbs stripped of me- belong to chat. Tidak, saya, sangat, seperti and the full verb are the written forms.
Formal and informal Indonesian
Formal Indonesian uses Anda (capitalised) or Bapak/Ibu for you, saya for I, and the full me- and ber- forms; spoken Jakarta forms (gue, lu, nggak, banget, the bare verb without me-) in a formal text are the errors the checker names as register.
The checker flags a mixed register as style rather than as an error, so the decision stays yours. If a whole text needs to move from one register to the other, the tone changer rewrites it in one pass.
Who checks Indonesian here
1
Students writing skripsi and school essays, where EYD compliance is marked.
2
Companies writing to Indonesian customers and government offices in formal Indonesian.
3
Foreign learners who want the affix explained rather than corrected silently.
Indonesian grammar checker FAQs
Is the Indonesian grammar checker free?
Yes. Check Indonesian without an account, within the per-check and daily word allowances shown beside the editor. Signing in raises them, and Pro removes the guest limits and the ads. The pricing page lists what each plan includes.
Which Indonesian does it check?
Standard written Indonesian, spelled as the current standard has it. The errors met most are di- written apart as a prefix or together as a preposition (dimakan against di rumah), ke- and ke similarly, the doubled word written with a digit, and English or Jakarta spellings (aktifitas for aktivitas, praktek for praktik, resiko for risiko). Indonesian is preselected on this page; the language menu above the editor changes it if the text turns out to be something else.
Does it correct Indonesian spelling as well as grammar?
Yes, and in Indonesian the two overlap. The errors met most are di- written apart as a prefix or together as a preposition (dimakan against di rumah), ke- and ke similarly, the doubled word written with a digit, and English or Jakarta spellings (aktifitas for aktivitas, praktek for praktik, resiko for risiko). Each of these is underlined where it happens, labelled spelling or grammar, with the standard form and the rule beside it.
Will it rewrite my Indonesian?
Not unless you ask it to. A check corrects what is wrong and leaves your sentences as you wrote them; every change is a separate flag you accept or ignore. The Improve and Rewrite passes, which do change wording, are separate buttons, and the paraphraser is a separate tool.
Can I check a whole Indonesian document?
Yes. Paste the text or drop in a .docx, .pdf or .txt file; the document is checked paragraph by paragraph and the corrected version can be copied or exported. Long documents are checked within the per-check allowance and continue as you scroll.
Is it useful if I am learning Indonesian?
That is where the reason attached to each flag earns its keep. Indonesian has no gender, no case and no agreement, and no verb conjugation for person or tense. A learner sees which rule was broken, not just the corrected word, and can accept the fix or read why it was raised before deciding.
After the check
Translate the corrected Indonesian, change its tone, or shorten it. One plan covers every tool.
Each page opens the checker with that language already selected and explains what it looks for in it. The picker above the editor covers more than seventy languages in all.
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