Meaning & Usage
〜つ is the native Japanese way to count everyday objects. Sino-Japanese numbers (いち、に、さん…) entered the language via Chinese. 〜つ predates them — it belongs to the 和語, the layer of Japanese that existed before Chinese influence arrived.
Use 〜つ for general physical objects, especially when no specific counter exists. It works for apples, chairs, problems, and wishes — anything without a dedicated counter. When you're unsure which counter to use, 〜つ is almost always a safe choice in casual speech.
In English, counting is simple: "one apple, two apples, three." Japanese is different — numbers change form depending on what you're counting. 〜ひき for small animals, 〜ほん for long thin objects, and so on. 〜つ cuts through that. When the right counter isn't obvious, reach for 〜つ.
One firm limit: 〜つ only covers numbers one through ten. Above ten, switch to Sino-Japanese numbers with 〜個（こ）or another appropriate counter. Even at ten, there's a catch — the word is とお, with no 〜つ attached.
〜つ fits naturally in both casual and polite speech. You'll hear it at the market, in the kitchen, among friends. Because these words come from native Japanese stock, they carry a familiar warmth that the Sino-Japanese numbers don't quite match.
Structure & Formation
Each count from one to ten is its own fixed form. There's no derivation rule — unlike Sino-Japanese counters, you can't combine a standard number with a suffix. These are standalone words that you memorize.
| Number | Japanese | Romaji | Reading |
|---|---|---|---|
| 1 | 一つ | hitotsu | ひとつ |
| 2 | 二つ | futatsu | ふたつ |
| 3 | 三つ | mittsu | みっつ |
| 4 | 四つ | yottsu | よっつ |
| 5 | 五つ | itsutsu | いつつ |
| 6 | 六つ | muttsu | むっつ |
| 7 | 七つ | nanatsu | ななつ |
| 8 | 八つ | yattsu | やっつ |
| 9 | 九つ | kokonotsu | ここのつ |
| 10 | 十 | too | とお |
Two things to notice. First, ten（とお）has no 〜つ — it stands alone. Second, みっつ（3）、よっつ（4）、むっつ（6）、やっつ（8）all contain a 促音 — a doubled consonant. Clip your voice sharply before that second consonant. Dropping it makes the word sound wrong.
Two sentence patterns to know:
- Counter + の + Noun: 三つのりんご — three apples
- Noun + Particle + Counter (before verb): りんごを三つ買った — bought three apples
Example Sentences
Counting Food and Objects
りんごを三つ買いました。
Ringo wo mittsu kaimashita.
I bought three apples.
卵が五つあります。
Tamago ga itsutsu arimasu.
There are five eggs.
飴を一つください。
Ame wo hitotsu kudasai.
Please give me one candy.
Counting in Everyday Situations
椅子が四つあります。
Isu ga yottsu arimasu.
There are four chairs.
箱を二つ持ってきてください。
Hako wo futatsu motte kite kudasai.
Please bring two boxes.
部屋に窓が六つあります。
Heya ni mado ga muttsu arimasu.
There are six windows in the room.
Asking How Many
いくつほしいですか。
Ikutsu hoshii desu ka.
How many do you want?
みかんはいくつありますか。
Mikan wa ikutsu arimasu ka.
How many mandarin oranges are there?
問題がいくつありますか。
Mondai ga ikutsu arimasu ka.
How many problems are there?
Numbers with の + Noun
七つの星が見えます。
Nanatsu no hoshi ga miemasu.
I can see seven stars.
二つのかばんを持っています。
Futatsu no kaban wo motte imasu.
I have two bags.
Counting Abstract Things
願いが三つあります。
Negai ga mittsu arimasu.
I have three wishes.
理由が二つあります。
Riyuu ga futatsu arimasu.
There are two reasons.
条件を一つ言います。
Jouken wo hitotsu iimasu.
I will state one condition.
Common Mistakes
Mistake 1: Using 〜つ beyond ten
❌ 十一つのりんごを買った。
✅ 十一個のりんごを買った。
〜つ stops at ten. For eleven and above, use Sino-Japanese numbers with 〜個（こ）or the appropriate specific counter. And remember: ten is とお, not 十つ — that form doesn't exist.
Mistake 2: Dropping the double consonant in みっつ、よっつ、むっつ、やっつ
❌ みつのりんご ✅ 三つのりんご
みっつ（3）、よっつ（4）、むっつ（6）、やっつ（8）each have a 促音 — a brief pause before the doubled consonant. Drop it and the word sounds wrong to native ears. Practice stopping your voice for a beat before the second consonant.
Mistake 3: Confusing とお with 十
❌ 十つのボール ✅ とおのボール / 十個のボール
Ten items in the native system is とお — no つ attached. じゅうつ doesn't exist. This trips up beginners who try to extend the 〜つ pattern past nine. Ten breaks the pattern; just learn とお as its own word.
Mistake 4: Placing the counter in the wrong position
❌ 三つりんごを食べた。
✅ りんごを三つ食べた。
Without の, the counter goes after the object and its particle, right before the verb. Two correct patterns: 「三つのりんご」（counter + の + noun）or「りんごを三つ」（noun + particle + counter）.
Mistake 5: Using 〜つ for people or animals
❌ 友達が三ついます。
✅ 友達が三人います。
〜つ is for inanimate objects and abstract concepts — not living beings. Use 〜人（にん）for people, 〜ひき for small animals, 〜とう for large ones. Using 〜つ for people sounds unnatural and can come across as rude.
Cultural Notes
Long before Chinese characters reached Japan, people were already counting with ひとつ、ふたつ、みっつ. These are among the oldest words in the language, and that age gives them a warmth that Sino-Japanese numbers don't carry.
Writers and poets have always felt this. 「七つの大罪」（The Seven Deadly Sins）uses ななつ. Traditional children's songs count through the whole series, ひとつ to とお. In folk tales and poetry, the native count feels rooted in a way that じゅう doesn't.
Daily life is full of 〜つ too. At a bakery or market, a clerk might ask「いくつにしますか？」— how many? Answering with ふたつ or みっつ sounds natural and relaxed. That question word, いくつ, comes from the same native system.
いくつ also doubles as an indirect way to ask someone's age. 「おいくつですか？」is polite — softer than asking directly. The 〜つ system runs deeper into everyday Japanese than most learners first expect.
Related Grammar Points
- 〜本: Counter for Long, Cylindrical Objects (Grammar N5)
- 〜人: Counting People in Japanese (Grammar N5)
- 〜個: Counter for Small Objects (Grammar N5)
- 〜枚 — Counter for Flat Things (Grammar N5)
- いくつ — How Many / How Old (Grammar N5)
- 〜時 — O'Clock (Grammar N5)
JLPT Tips
On N5, 〜つ appears in both the vocabulary and reading sections. You need to recognize written forms like 一つ、二つ、三つ and understand them in context.
Counter questions are common: given a situation, pick the right counter. For general objects between one and ten, 〜つ is almost always the safest answer.
Drill these four first — ひとつ（1）、ふたつ（2）、みっつ（3）、よっつ（4）. They appear most often in N5 content. The higher numbers show up less.
いくつ（how many）turns up in listening passages too. At N5, you just need to know it means "how many" — the age-asking nuance isn't tested at this level.
One last thing: とお means ten, no つ attached. Don't confuse it with 十. If you see とお in an exam passage, it's counting ten items in the native Japanese system.