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Japanese Counters: Complete Guide to Counting in Japanese

Master Japanese counters (助数詞 josūshi): the special words you must use when counting objects, people, animals, and more. Learn which counter to use for flat things (枚), long things (本), small animals (匹), and over 15 more essential counters with kanji, readings, and examples.

What Are Japanese Counters?

Why Counters Exist

In Japanese, you can't just say "three cats" or "two books." You need a counter word between the number and the noun. Think of it like English "three sheets of paper", but Japanese uses counters for almost everything.

How They Work

The pattern is: Number + Counter + の + Noun or Noun を Number + Counter. For example: 猫を三匹 (neko o sanbiki) = "three cats." The counter 匹 tells you we're counting small animals.

The Universal Counter

Good news: the つ (tsu) counter works for almost anything when you're unsure. Use ひとつ (1), ふたつ (2), みっつ (3), よっつ (4), いつつ (5) up to とお (10). Beyond 10, you'll need specific counters.

Essential Japanese Counters

These are the most commonly used counters in everyday Japanese. Master these and you'll handle 90% of counting situations.

CounterReadingUsed ForExampleJLPT
つ
つ
tsu
General / anythingりんごをみっつください (3 apples please)N5
人
にん
nin
People三人で行きます (3 people will go)N5
個
こ
ko
Small objects卵を五個買いました (bought 5 eggs)N5
本
ほん
hon
Long/cylindrical thingsペンを二本持っています (have 2 pens)N5
枚
まい
mai
Flat/thin things紙を三枚ください (3 sheets of paper please)N5
匹
ひき
hiki
Small animals猫が二匹います (there are 2 cats)N5
台
だい
dai
Machines/vehicles車が三台あります (there are 3 cars)N4
冊
さつ
satsu
Books/bound volumes本を四冊読みました (read 4 books)N4
杯
はい
hai
Cups/glasses/bowlsコーヒーを一杯飲みます (drink 1 cup of coffee)N4
回
かい
kai
Times/occurrences三回行きました (went 3 times)N4
階
かい
kai
Floors/stories五階に住んでいます (live on the 5th floor)N4
歳
さい
sai
Age (years old)二十歳です (I am 20 years old)N5
頭
とう
tou
Large animals牛が十頭います (there are 10 cows)N3
羽
わ
wa
Birds/rabbits鳥が三羽飛んでいます (3 birds are flying)N3
足
そく
soku
Pairs of footwear靴を二足買いました (bought 2 pairs of shoes)N3
着
ちゃく
chaku
Clothing itemsシャツを三着持っています (have 3 shirts)N3
軒
けん
ken
Houses/buildingsこの通りに家が十軒あります (10 houses on this street)N2
通
つう
tsuu
Letters/emailsメールを五通送りました (sent 5 emails)N2

All Japanese Counters Explained

Each counter with its kanji, readings, counting patterns, and example sentences.

🔢
つ
General (anything)
つ (tsu)
Pattern: ひとつ、ふたつ、みっつ、よっつ、いつつ…

Example:

りんごをみっつください。

Ringo o mittsu kudasai.

Three apples, please.

👥
人
People
にん (nin)
Pattern: ひとり、ふたり、さんにん、よにん、ごにん…
Sound changes: 1 person = ひとり (hitori), 2 people = ふたり (futari): irregular readings

Example:

家族は四人です。

Kazoku wa yonin desu.

There are four people in my family.

⚪
個
Small objects
こ (ko)
Pattern: いっこ、にこ、さんこ、よんこ、ごこ…
Sound changes: 1 = いっこ (ikko), 6 = ろっこ (rokko), 8 = はっこ (hakko), 10 = じゅっこ (jukko)

Example:

おにぎりを三個食べました。

Onigiri o sanko tabemashita.

I ate three rice balls.

🖊
本
Long/cylindrical things
ほん (hon)
Pattern: いっぽん、にほん、さんぼん、よんほん…
Sound changes: 1 = いっぽん (ippon), 3 = さんぼん (sanbon), 6 = ろっぽん (roppon), 8 = はっぽん (happon), 10 = じゅっぽん (juppon)

Example:

傘を二本持っています。

Kasa o nihon motte imasu.

I have two umbrellas.

📄
枚
Flat/thin things
まい (mai)
Pattern: いちまい、にまい、さんまい、よんまい…

Example:

切手を五枚ください。

Kitte o gomai kudasai.

Five stamps, please.

🐱
匹
Small animals
ひき (hiki)
Pattern: いっぴき、にひき、さんびき、よんひき…
Sound changes: 1 = いっぴき (ippiki), 3 = さんびき (sanbiki), 6 = ろっぴき (roppiki), 8 = はっぴき (happiki), 10 = じゅっぴき (juppiki)

Example:

犬を三匹飼っています。

Inu o sanbiki katte imasu.

I have three dogs.

🚗
台
Machines/vehicles
だい (dai)
Pattern: いちだい、にだい、さんだい、よんだい…

Example:

パソコンを二台使っています。

Pasokon o nidai tsukatte imasu.

I use two computers.

📚
冊
Books/volumes
さつ (satsu)
Pattern: いっさつ、にさつ、さんさつ、よんさつ…
Sound changes: 1 = いっさつ (issatsu), 8 = はっさつ (hassatsu), 10 = じゅっさつ (jussatsu)

Example:

今月は本を三冊読みました。

Kongetsu wa hon o sansatsu yomimashita.

I read three books this month.

☕
杯
Cups/glasses/bowls
はい (hai)
Pattern: いっぱい、にはい、さんばい、よんはい…
Sound changes: 1 = いっぱい (ippai), 3 = さんばい (sanbai), 6 = ろっぱい (roppai), 8 = はっぱい (happai)

Example:

毎朝コーヒーを二杯飲みます。

Maiasa koohii o nihai nomimasu.

I drink two cups of coffee every morning.

🔄
回
Times/occurrences
かい (kai)
Pattern: いっかい、にかい、さんかい、よんかい…
Sound changes: 1 = いっかい (ikkai), 6 = ろっかい (rokkai), 8 = はっかい (hakkai), 10 = じゅっかい (jukkai)

Example:

日本に三回行きました。

Nihon ni sankai ikimashita.

I have been to Japan three times.

🏢
階
Floors/stories
かい (kai)
Pattern: いっかい、にかい、さんがい、よんかい…
Sound changes: 3rd floor = さんがい (sangai): irregular

Example:

エレベーターで五階に行きます。

Erebeetaa de gokai ni ikimasu.

I take the elevator to the fifth floor.

🎂
歳
Age (years old)
さい (sai)
Pattern: いっさい、にさい、さんさい、よんさい…
Sound changes: 1 = いっさい (issai), 8 = はっさい (hassai), 20 = はたち (hatachi): special reading

Example:

妹は十五歳です。

Imouto wa juugosai desu.

My younger sister is 15 years old.

🐄
頭
Large animals
とう (tou)
Pattern: いっとう、にとう、さんとう、よんとう…
Sound changes: 1 = いっとう (ittou)

Example:

動物園に象が二頭います。

Doubutsuen ni zou ga nitou imasu.

There are two elephants at the zoo.

🐦
羽
Birds/rabbits
わ (wa)
Pattern: いちわ、にわ、さんわ、よんわ…
Sound changes: 3 = さんば (sanba) or さんわ (sanwa), 6 = ろっぱ (roppa) or ろくわ (rokuwa)

Example:

庭に鳥が五羽来ました。

Niwa ni tori ga gowa kimashita.

Five birds came to the garden.

👟
足
Pairs of footwear
そく (soku)
Pattern: いっそく、にそく、さんぞく、よんそく…
Sound changes: 1 = いっそく (issoku), 3 = さんぞく (sanzoku)

Example:

新しい靴を一足買いました。

Atarashii kutsu o issoku kaimashita.

I bought a new pair of shoes.

👕
着
Clothing items
ちゃく (chaku)
Pattern: いっちゃく、にちゃく、さんちゃく…
Sound changes: 1 = いっちゃく (icchaku)

Example:

ドレスを二着持っています。

Doresu o nichaku motte imasu.

I have two dresses.

🏠
軒
Houses/buildings
けん (ken)
Pattern: いっけん、にけん、さんげん、よんけん…
Sound changes: 1 = いっけん (ikken), 3 = さんげん (sangen)

Example:

隣に新しい家が三軒建ちました。

Tonari ni atarashii ie ga sangen tachimashita.

Three new houses were built next door.

✉
通
Letters/emails
つう (tsuu)
Pattern: いっつう、につう、さんつう、よんつう…
Sound changes: 1 = いっつう (ittsuu)

Example:

手紙を二通もらいました。

Tegami o nitsuu moraimashita.

I received two letters.

Which Counter Should I Use?

Not sure which counter fits? This quick-reference guide sorts counters by the type of object you're counting.

What You're CountingCounterExamples
People人Friends, family members, customers, students
Small objects個Apples, eggs, balls, stones, rice balls
Long/thin objects本Pens, bottles, umbrellas, bananas, trees, roads
Flat/thin objects枚Paper, plates, shirts, stamps, tickets, photos
Small animals匹Cats, dogs, fish, insects, mice
Large animals頭Horses, cows, elephants, whales
Birds & rabbits羽Sparrows, eagles, chickens, rabbits
Books冊Novels, textbooks, manga, magazines, notebooks
Machines/vehicles台Cars, computers, TVs, washing machines
Cups/glasses杯Coffee, tea, beer, bowls of rice/ramen
Times/occurrences回Trips, attempts, lessons, sessions
Building floors階1st floor, 3rd floor, basement (地下一階)
Age歳Person's age (5歳 = 5 years old)
Footwear pairs足Shoes, sandals, boots, socks
Clothing着Shirts, dresses, jackets, suits
Houses軒Houses, shops, restaurants, buildings
Letters/emails通Letters, postcards, emails, faxes
Anything (unsure)つUse this when you don't know the specific counter!

Counter Sound Changes (Rendaku)

Why Counters Change Pronunciation

When certain numbers combine with counters, the pronunciation changes to make them easier to say. This is called 連濁 (rendaku). The most common changes happen with numbers 1, 3, 6, 8, and 10.

本 (hon): Long Objects

1: いっぽん (ippon)

2: にほん (nihon)

3: さんぼん (sanbon)

4: よんほん (yonhon)

5: ごほん (gohon)

6: ろっぽん (roppon)

匹 (hiki): Small Animals

1: いっぴき (ippiki)

2: にひき (nihiki)

3: さんびき (sanbiki)

4: よんひき (yonhiki)

5: ごひき (gohiki)

6: ろっぴき (roppiki)

The Universal Counter: つ (tsu)

When you don't know which counter to use, the つ counter is your safety net. It uses native Japanese numbers (大和言葉 yamato-kotoba) and works for most general objects. It only goes from 1 to 10.

ひとつ

hitotsu

1

ふたつ

futatsu

2

みっつ

mittsu

3

よっつ

yottsu

4

いつつ

itsutsu

5

むっつ

muttsu

6

ななつ

nanatsu

7

やっつ

yattsu

8

ここのつ

kokonotsu

9

とお

too

10

Counters in Japanese Culture

Counters at the Konbini

At convenience stores (コンビニ) and restaurants, staff will ask how many items or how many people. Knowing counters like 個 (ko) for food items, 人 (nin) for people, and 本 (hon) for bottled drinks will make ordering smooth and natural.

Age Counter: 歳/才 (sai)

Asking someone's age uses the counter 歳 (sai): 何歳ですか? (Nansai desu ka? / How old are you?). The simplified kanji 才 is commonly used in informal writing. At age 20 (二十歳), the special reading はたち (hatachi) is used instead of にじゅっさい.

Fun Fact: 4 and 9 Are Avoided

The number 4 can be read as し (shi), which sounds like 死 (death). The number 9 can be read as く (ku), sounding like 苦 (suffering). In hospitals and hotels, room 4 and room 9 are often skipped. When counting, use よん (yon) for 4 and きゅう (kyuu) for 9 instead.

Tips for Learning Japanese Counters

Start with 5 Counters

Don't try to learn all counters at once. Start with つ (general), 人 (people), 個 (small objects), 本 (long things), and 枚 (flat things). These five cover most daily situations.

Practice with Real Objects

Look around your room and count things with the right counter: pencils (本), papers (枚), books (冊), coins (枚). Physical practice builds faster recall than memorization alone.

Master Sound Changes

Focus on sound changes for 1, 3, 6, 8, and 10. These numbers most commonly trigger pronunciation shifts. Say them aloud repeatedly until the changed forms feel natural.

Collect Counter Cards

Use our gamified card collection to master kanji that appear in counters. Many counter kanji (人, 本, 日, 月) are among the most common kanji you'll encounter.

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