Japanese Counters: How to Count Everything in Japanese
In Japanese, you can't just say “three cats” — you must use the right counter word. Here's the system explained clearly, plus a reference chart for the 20 most common counters.
How Japanese Counting Works
Japanese counting uses classifiers called 助数詞 (josushi) — counter words that follow the number. They categorise objects by shape, nature, or category. Structure: Number + Counter
The 17 Most Essential Japanese Counters
| Counter | Used for | Examples |
|---|---|---|
| 個 (こ) | Small compact objects (general) | りんご3個, ボタン5個 |
| 本 (ほん) | Long thin objects | えんぴつ2本, ビール1本 |
| 枚 (まい) | Flat thin objects | 紙3枚, シャツ2枚 |
| 匹 (ひき) | Small/medium animals | ねこ2匹, 魚5匹 |
| 頭 (とう) | Large animals | 馬3頭, 牛1頭 |
| 羽 (わ) | Birds, rabbits | はと2羽, うさぎ1羽 |
| 台 (だい) | Machines, vehicles | 車2台, パソコン1台 |
| 冊 (さつ) | Bound books | 本3冊, ノート2冊 |
| 杯 (はい) | Cups, bowls, glasses | コーヒー2杯, ごはん1杯 |
| 枚 (まい) | Flat thin objects | 紙3枚, シャツ2枚 |
| 回 (かい) | Number of times | 3回やった, 2回見た |
| 番 (ばん) | Ordinal numbers / ranking | 1番, 3番目 |
| 階 (かい) | Floors of a building | 3階, 1階 |
| 人 (にん) | People (3+) | 5人, 10人 (1=ひとり, 2=ふたり) |
| 歳 (さい) | Age | 23歳, 何歳？ |
| 着 (ちゃく) | Suits, sets of clothing | スーツ2着 |
| 足 (そく) | Pairs of footwear | くつ3足, 靴下2足 |
Irregular Readings: The Sounds That Change
Several counters trigger sound changes (rendaku) at certain numbers. These must be memorised:
本 (ほん) — long thin objects
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|
| いっぽん | にほん | さんぼん | よんほん | ごほん | ろっぽん | ななほん | はっぽん | きゅうほん | じゅっぽん |
匹 (ひき) — small animals
| 1 | 2 | 3 | 6 | 8 | 10 |
|---|---|---|---|---|---|
| いっぴき | にひき | さんびき | ろっぴき | はっぴき | じゅっぴき |
People: 人 (にん) — irregular at 1 and 2
| 1 person | 2 people | 3+ |
|---|---|---|
| ひとり (一人) | ふたり (二人) | さんにん、よにん… |
Native Japanese Counting: ひとつ, ふたつ, みっつ…
Before learning all the counters, there's a native Japanese counting system (和語, wago) that works for general objects from 1–9. It's always safe to use when you don't know the specific counter:
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|
| ひとつ | ふたつ | みっつ | よっつ | いつつ | むっつ | ななつ | やっつ | ここのつ |
At 10+, switch to the Sino-Japanese counting system with 個 or the specific counter.
Practice Counters in Real Sentences
Counter errors are among the most noticeable in Japanese writing. Check your counter usage with ZISTICA MOJIIQ's AI grammar checker.
FAQ
Why does Japanese have different counters?
Japanese classifiers (助数詞) categorise objects by shape or nature — like English “a sheet of paper” or “a head of cattle”, but mandatory for all counting. ~20 counters cover 90% of everyday use.
What is the most versatile counter?
個 (ko) for small compact objects is the most general. つ (native Japanese system, 1–9) also works broadly when you don't know the specific counter.