Indonesian Numbers and Classifiers

Level: Beginner (A1). Counting in Indonesian needs two things: the number words, and a small “counting word” called a classifier that sits between the number and the noun.

The rule

A classifier (Indonesian kata penggolong or kata bantu bilangan) is a word you put between a number and a noun when you count, much like English two head of cattle or three sheets of paper. Indonesian uses one for almost everything.

The order is always number + classifier + noun:

• dua orang guru — two teachers (literally “two person teacher”)
• tiga ekor kucing — three cats (“three tail cat”)
• lima buah buku — five books (“five fruit book”)

Three classifiers cover most beginner needs: orang for people, ekor for animals, and buah for things and objects (the general, catch-all classifier). The noun never changes — it stays in its plain, singular form even though you are talking about several.

For the number one, you do not say satu orang; the satu shrinks to the prefix se- and joins the classifier: seorang (one person), seekor (one animal), sebuah (one object).

Numbers and classifiers at a glance

Core numbers one to ten, plus the building blocks for bigger numbers:

Build bigger numbers with puluh (tens), ratus (hundreds) and ribu (thousands): tiga puluh (30), seratus (100), dua ratus (200), seribu (1,000). Note the same se- = “one”: sepuluh, seratus, seribu.

The three everyday classifiers:

How to say it

Indonesian spelling is very regular — one letter, one sound. A few points for this lesson’s words:

• c is English “ch”: tiga is fine, but kucing (cat) = “KOO-ching”.
• ng / ny are single sounds: ng as in “singer” (orang = “OH-rang”), ny as in “canyon”.
• vowels are pure: a = “ah”, e is often a soft “uh” (empat ≈ “uhm-PAT”), u = “oo” (dua = “DOO-ah”).
• stress is light and usually on the next-to-last syllable: se-PU-luh, se-O-rang.

Example sentences

1. Ada dua orang guru.
   There are two teachers.
   orang for people
2. Saya punya tiga ekor kucing.
   I have three cats.
   ekor for animals
3. Dia membeli lima buah buku.
   She is buying five books.
   buah for objects
4. Seorang anak bermain di taman.
   One child is playing in the park.
   satu + orang → seorang
5. Ada seekor anjing di jalan.
   There is a dog on the street.
   satu + ekor → seekor
6. Saya mau sebuah apel.
   I want one apple.
   satu + buah → sebuah
7. Empat orang teman datang.
   Four friends came.
8. Kami melihat enam ekor burung.
   We saw six birds.
9. Dia menulis dua buah surat.
   He wrote two letters.
10. Ada sepuluh orang di kelas.
    There are ten people in the class.
    sepuluh = se + puluh
11. Saya membeli tiga buah mangga.
    I bought three mangoes.
12. Ada dua puluh ekor ikan.
    There are twenty fish.
    dua puluh = 20
13. Seratus orang hadir.
    A hundred people attended.
    seratus = 100
14. Dia punya seribu rupiah.
    He has one thousand rupiah.
    seribu = 1,000
15. Berapa ekor kucing yang kamu punya?
    How many cats do you have?
    berapa = how many
16. Ada lima orang perempuan dan tiga orang laki-laki.
    There are five women and three men.
17. Saya mau dua buah, bukan satu.
    I want two, not one.
    noun can be dropped if clear
18. Dua anak itu bermain bola.
    Those two children are playing ball.
    classifier often dropped in speech

Common mistakes

• ❌ dua buku-buku → ✅ dua buku. A number already shows plural, so never reduplicate the noun after it.
• ❌ satu orang guru → ✅ seorang guru. For “one”, fuse satu into se- on the classifier.
• ❌ tiga ekor guru → ✅ tiga orang guru. ekor (“tail”) is for animals, not people.
• ❌ dua orang kucing → ✅ dua ekor kucing. Use ekor for animals, not orang.
• ❌ lima buku buah → ✅ lima buah buku. The order is number + classifier + noun, so the classifier comes before the noun.
• ❌ dua puluhan orang → ✅ dua puluh orang. “Twenty” is dua puluh; puluhan means a vague “tens of”.

A short conversation

Di toko hewan (at the pet shop): — Kamu mau berapa ekor ikan? — Saya mau tiga ekor ikan dan seekor kura-kura. — Baik. Dan buku tentang ikan? — Ya, satu — sebuah buku saja.

Usage notes

• Classifiers can be dropped in casual speech. dua guru (two teachers) is common and understood; the full dua orang guru is the standard, careful form and what exams expect.
• Many more classifiers exist. Beyond the big three you will meet batang (long thin things: pens, cigarettes), helai/lembar (flat sheets: paper, cloth) and biji (small round things). Learn these later; orang/ekor/buah carry you a long way first.
• se- is “one” everywhere. The same se- that gives seorang also builds sepuluh, seratus, seribu — and words like sehari (one day).
• Asking “how many”: use berapa + classifier + noun: berapa orang?, berapa ekor?

Compared with…

• Plural by reduplication — without a number, Indonesian doubles the noun to show plural: buku-buku (books). See Plural by Reduplication. With a number, you don’t.
• Noun + adjective order — modifiers follow the noun, and so does the owner: compare the word order in Noun and Adjective Order.

Quick recap before the quiz.

Practice

Practice

Numbers and classifiers practice

Try each one, then press Check. No sign-up, nothing is sent anywhere — it all runs in your browser.

1 Three cats = tiga ___ kucing.

orang ekor buah puluh

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ekor — Animals take ekor.

2 Which is correct for 'two teachers'?

dua guru-guru dua ekor guru dua orang guru guru dua orang

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dua orang guru — People take orang, and the order is number + classifier + noun.

3 One apple = ____ apel.

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Hint: satu + buah

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sebuah — satu fuses to se- on the classifier buah → sebuah.

4 Five books = lima ____ buku.

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Hint: objects

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buah — Objects take the general classifier buah.

5 Order the words: 'three birds'.

burungtigaekor

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tiga ekor burung — number + classifier + noun.

6 Match each noun to its usual classifier.

• guru (teacher) Match for guru (teacher) — choose — buahekororang
• kucing (cat) Match for kucing (cat) — choose — buahekororang
• buku (book) Match for buku (book) — choose — buahekororang
• anak (child) Match for anak (child) — choose — buahekororang

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• guru (teacher) → orang
• kucing (cat) → ekor
• buku (book) → buah
• anak (child) → orang

orang = people, ekor = animals, buah = objects.

Quiz

Check yourself

Indonesian numbers and classifiers

12 questions · pick an answer and you'll see straight away if it's right.

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1. 1Two teachers = dua ___ guru.

   A ekor B buah C orang D puluh
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   orang — People take orang.

2. 2Three cats = tiga ___ kucing.

   A orang B ekor C buah D biji
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   ekor — Animals take ekor.

3. 3Five books = lima ___ buku.

   A orang B ekor C buah D helai
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   buah — Objects take the general classifier buah.

4. 4'One person' is…

   A satu orang B seorang C orang satu D se orang
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   seorang — satu fuses to se- and joins the classifier: seorang.

5. 5Which is wrong?

   A dua buku B dua buah buku C dua buku-buku D tiga buku
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   dua buku-buku — Don't reduplicate the noun after a number.

6. 6'One animal' is…

   A satu ekor B seekor C ekor satu D se ekor
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   seekor — satu + ekor → seekor.

7. 7What does seratus mean?

   A ten B twenty C one hundred D one thousand
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   one hundred — se- (one) + ratus (hundred) = 100.

8. 8The correct order is…

   A noun + number + classifier B number + classifier + noun C classifier + number + noun D number + noun + classifier
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   number + classifier + noun — Always number + classifier + noun.

9. 9'Twenty' in Indonesian is…

   A dua ratus B dua puluh C duapuluhan D sepuluh dua
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   dua puluh — Tens are built with puluh: dua puluh.

10. 10Why is the noun singular in 'tiga ekor kucing'?

    A kucing has no plural ever B the number already marks plural C ekor forces singular D it is a spelling rule
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    the number already marks plural — The number shows plural, so the noun stays in its plain form.

11. 11One object (apple): ____ apel.
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    sebuah — satu + buah → sebuah.

12. 12Which classifier is the general, catch-all one for things?

    A orang B ekor C buah D batang
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    buah — buah covers most objects when you are unsure.

Recap cheat-sheet

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