Hon Counter (本) - Long Thin Objects in Japanese
The Japanese counter 本 (hon) attaches to long thin objects: pencils, bottles, umbrellas, trees, neckties, and (counterintuitively) trains and legs. The pattern is regular except at 1, 3, 6, 8, 10 where gemination and rendaku kick in.
Long, thin objects: pencils, bottles, umbrellas, trees, neckties, even trains.
| # | Kanji | Romaji | Notes | Audio |
|---|---|---|---|---|
| 1 | 一本 | ip-pon | gemination | |
| 2 | 二本 | ni-hon | ||
| 3 | 三本 | san-bon | rendaku | |
| 4 | 四本 | yon-hon | ||
| 5 | 五本 | go-hon | ||
| 6 | 六本 | rop-pon | gemination | |
| 7 | 七本 | nana-hon | ||
| 8 | 八本 | hap-pon | gemination | |
| 9 | 九本 | kyū-hon | ||
| 10 | 十本 | jup-pon / jip-pon | either accepted |
What counts as a long thin object
The pattern is “long and thin” rather than strictly cylindrical. The category includes:
- Stationery: pencils (鉛筆 enpitsu), pens (ペン pen), markers (マジック majikku).
- Containers: bottles (瓶 bin), beer in a bottle (ビール biiru when bottled), sake bottles.
- Carried items: umbrellas (傘 kasa), walking sticks, golf clubs.
- Natural objects: trees (木 ki), branches, bamboo poles, candles.
- Clothing items: neckties (ネクタイ nekutai), belts.
- Food: bananas (バナナ banana), corn cobs, frankfurters, popsicles.
- Idiomatic: trains (電車 densha), buses on a route, telephone calls (when emphasising the call as a unit), home runs.
Sound-change pattern
Gemination: 1 (ip-pon), 6 (rop-pon), 8 (hap-pon), 10 (jup-pon). The /h/ becomes /p/ after a stop consonant.
Rendaku: 3 (san-bon). The /h/ becomes /b/ after san.
Regular: 2, 4, 5, 7, 9. ni-hon, yon-hon, go-hon, nana-hon, kyu-hon.
Common mistakes
- Using hon for an apple: apples are 個 (ko) not 本 (hon). Hon requires “long and thin”; ko is for compact small objects.
- Saying ichi-hon: the gemination form ip-pon is required at 1, not ichi-hon. The error is comprehensible but immediately marks the speaker as a learner.
- Saying san-hon: rendaku to san-bon is required at 3. Tofugu and Genki both flag this as the second most common counter mistake after 1.
Frequently asked questions
What objects use the hon counter in Japanese?
Long, thin objects: pencils (鉛筆 enpitsu), pens (ペン pen), bottles (瓶 bin), umbrellas (傘 kasa), trees (木 ki), neckties (ネクタイ nekutai), bananas (バナナ banana), cigarettes (タバコ tabako). Counterintuitively, trains (電車 densha), legs (足 ashi), and rolls of film also take hon. The pattern is “long and thin” rather than strictly cylindrical.
Why is san-bon spelt with a B?
Rendaku, sequential voicing. The /h/ in hon voices to /b/ after san. The same rendaku appears at san-byaku (300), san-biki (3 small animals), and san-zen (3000). Source: Tofugu rendaku guide; Daijirin entry for 本.
Why are 1, 6, 8, 10 spelt with double consonants (ip-pon, rop-pon, hap-pon, jup-pon)?
Gemination, a sound-change pattern in Sino-Japanese vocabulary where final consonants double before /h/, /k/, /s/, /t/. The pattern is regular across hon, hyaku, byaku, fun, pun, and several other counters. The Tofugu hon guide has the cleanest English explanation.
What is the difference between hon and pon?
Hon is the base form. The /h/ becomes /p/ in the gemination positions (1, 6, 8, 10): ip-pon, rop-pon, hap-pon, jup-pon. The /b/ form (san-bon) is the rendaku position. So you see hon at most positions, pon at the geminated ones, and bon at san.
Continue: counters hub · flat objects (mai) · general small (ko). Tofugu's per-counter hon article is the trust authority for English-language counter pedagogy.