Japanese Counters: How to Count Everything in Japanese

Why Japanese Has Counter Words

In English, you can place a number directly before any noun: three cats, five books, two cars. Japanese does not work this way. Every time you count something in Japanese, you must attach a counter word (助数詞 / じょすうし / josuushi) to the number. The counter classifies the noun by its physical shape, size, or category. Saying just a number without a counter sounds incomplete and ungrammatical to native speakers — similar to saying "three of paper" instead of "three sheets of paper" in English.

This system exists because Japanese nouns do not have a grammatical distinction between singular and plural forms. The word 猫 (ねこ / neko) means both "cat" and "cats." Counters work together with numbers to specify exactly how many of something you are talking about. While this might seem daunting at first, the system is highly logical once you understand the categories. Long, thin objects share one counter. Flat objects share another. Small animals share another. Once you learn the category, you can apply the counter to any new noun that fits.

Counters appear on every level of the JLPT exam, from N5 through N1. The listening section frequently tests whether you can hear and understand counter words in context. The reading section expects you to know which counter belongs with which noun. Mastering counters early — starting with the 10 to 15 most common ones — gives you a significant advantage on the exam and in real conversation.

The Universal Fallback: つ (tsu) Counter

The つ counter uses the native Japanese number system and can be used for almost any inanimate object. If you forget the specific counter for something, つ is your safe fallback. It works for objects, abstract concepts, food items, and more. The only limitation is that it only goes up to 10 — there is no native Japanese number for 11 and above in this system.

Example: りんごを三つください (りんごをみっつください / ringo wo mittsu kudasai) — Please give me three apples. Even though apples have a specific counter (個 / こ / ko), using mittsu is perfectly natural and understood.

If you are just starting to learn Japanese with our hiragana guide, memorizing the つ counter from hitotsu to too is one of the first vocabulary milestones you should aim for. These ten words appear constantly in daily life — at restaurants, shops, and in casual conversation.

人 (にん / nin) — Counting People

The people counter is one of the first you should learn because it comes up in virtually every conversation — at restaurants, when buying tickets, when talking about family members. It has two critical irregular forms: one person is 一人 (ひとり / hitori) and two people is 二人 (ふたり / futari). From three onward, it follows the regular Sino-Japanese pattern.

Example: 三人で食べに行きましょう (さんにんでたべにいきましょう / sannin de tabe ni ikimashou) — Let's go eat as a group of three. At a restaurant, the staff will ask 何名様ですか (なんめいさまですか / nanmeisama desu ka) — How many people? You answer with the counter: 二人です (ふたりです / futari desu) — Two people.

Animal Counters: 匹 (ひき / hiki) and 頭 (とう / tou)

Japanese has two main animal counters. The counter 匹 (ひき / hiki) is used for small and medium-sized animals: cats, dogs, fish, insects, rabbits, and most pets. The counter 頭 (とう / tou) is used for large animals: horses, cows, elephants, whales, and zoo animals. The dividing line is roughly whether you could hold the animal — if yes, use 匹; if no, use 頭. Note that 匹 has significant sound changes (rendaku).

Example: 猫を二匹飼っています (ねこをにひきかっています / neko wo nihiki katte imasu) — I have two cats. A special exception: rabbits are traditionally counted with 羽 (わ / wa), the counter for birds, due to a historical custom where monks classified rabbits as birds so they could eat them during meat-fasting periods.

Object Counters by Shape and Category

The most commonly tested counters on the JLPT N5 and JLPT N4 are the object counters organized by physical shape. Japanese categorizes objects primarily by their shape — long and thin, flat and wide, small and compact — and each shape has its own counter.

本 (ほん / hon) — Long, Thin Objects

Use 本 for anything long and cylindrical: pens, pencils, bottles, umbrellas, bananas, trees, roads, rivers, telephone calls, and even movies (on film reels, historically). This is one of the most versatile counters and also one of the best examples of rendaku sound changes.

Example: ペンを三本買いました (ペンをさんぼんかいました / pen wo sanbon kaimashita) — I bought three pens. Notice that 3 triggers the h → b change: hon becomes bon.

枚 (まい / mai) — Flat, Thin Objects

Use 枚 for flat objects: paper, plates, shirts, tickets, photos, sliced bread, pizzas, CDs, blankets, and towels. Good news for learners: 枚 has no sound changes at all. It follows the completely regular pattern: ichimai, nimai, sanmai, yonmai, gomai, rokumai, nanamai, hachimai, kyuumai, juumai.

Example: 切符を二枚ください (きっぷをにまいください / kippu wo nimai kudasai) — Two tickets, please. This is one of the most useful counter phrases for traveling in Japan.

台 (だい / dai) — Machines and Vehicles

Use 台 for machines, vehicles, and large electronic devices: cars, bicycles, computers, televisions, washing machines, pianos, and air conditioners. The counter follows a mostly regular pattern: ichidai, nidai, sandai, yondai, godai, rokudai, nanadai, hachidai, kyuudai, juudai.

Example: 車を一台持っています (くるまをいちだいもっています / kuruma wo ichidai motte imasu) — I have one car.

冊 (さつ / satsu) — Books and Bound Volumes

Use 冊 for books, magazines, notebooks, dictionaries, and any bound volume. Sound changes occur with 1 (issatsu), 8 (hassatsu), and 10 (jussatsu) where the consonant doubles.

Example: 本を五冊読みました (ほんをごさつよみました / hon wo gosatsu yomimashita) — I read five books. Note that 本 here means "book" (the noun), while the counter 冊 classifies it as a bound volume.

杯 (はい / hai) — Cups, Glasses, and Bowls

Use 杯 for drinks in cups or glasses, bowls of rice or soup, and spoonfuls. Like other h-counters, it has rendaku: 1 is いっぱい (ippai), 3 is さんばい (sanbai), 6 is ろっぱい (roppai), 8 is はっぱい (happai), and 10 is じゅっぱい (juppai).

Example: コーヒーを一杯飲みました (コーヒーをいっぱいのみました / koohii wo ippai nomimashita) — I drank one cup of coffee. Fun fact: いっぱい (ippai) also means "full" or "a lot" in casual Japanese, a completely different word that happens to sound the same.

個 (こ / ko) — Small, Compact Objects

Use 個 for small, roughly round or compact objects: apples, eggs, balls, stones, boxes, and candies. Sound changes occur with 1 (いっこ / ikko), 6 (ろっこ / rokko), 8 (はっこ / hakko), and 10 (じゅっこ / jukko) where the k sound doubles.

Example: 卵を六個買いました (たまごをろっこかいました / tamago wo rokko kaimashita) — I bought six eggs.

More Essential Counters

階 (かい / kai) — Floors of a Building

Use 階 for floors or stories of a building. Sound changes: 1st floor is いっかい (ikkai), 6th floor is ろっかい (rokkai), 8th floor is はっかい (hakkai), and 10th floor is じゅっかい (jukkai). The 3rd floor, さんがい (sangai), is also irregular — the k becomes g.

Example: レストランは三階にあります (レストランはさんがいにあります / resutoran wa sangai ni arimasu) — The restaurant is on the third floor.

回 (かい / kai) — Times / Occurrences

Use 回 for counting the number of times something happens. This counter is essential for talking about frequency. It follows the same sound change pattern as 階: いっかい (ikkai, one time), にかい (nikai, two times), さんかい (sankai, three times).

Example: 日本に三回行きました (にほんにさんかいいきました / nihon ni sankai ikimashita) — I've been to Japan three times.

歳 / 才 (さい / sai) — Age

Use 歳 or 才 (simplified form) for counting age. The only irregular form is 20 years old: 二十歳 (はたち / hatachi). Otherwise the pattern is regular: いっさい (issai, 1 year old), にさい (nisai, 2), さんさい (sansai, 3), and so on. Note that 8 years old is はっさい (hassai) with a doubled s sound.

Example: 娘は五歳です (むすめはごさいです / musume wa gosai desu) — My daughter is five years old.

番 (ばん / ban) — Numbers in Sequence

Use 番 for ordinal ranking or sequential numbers: bus numbers, platform numbers, order in a queue. The pattern is regular: いちばん (ichiban, number one / first), にばん (niban, number two), さんばん (sanban, number three). The word 一番 (ichiban) is also commonly used as an adverb meaning "most" or "best."

Example: 一番線に電車が来ます (いちばんせんにでんしゃがきます / ichiban sen ni densha ga kimasu) — The train is coming to platform one.

足 (そく / soku) — Pairs of Footwear

Use 足 for shoes, socks, stockings, and any footwear that comes in pairs. One pair is いっそく (issoku), two pairs is にそく (nisoku), three pairs is さんぞく (sanzoku). Sound changes follow a similar pattern: 1, 8, and 10 cause doubling (issoku, hassoku, jussoku).

着 (ちゃく / chaku) — Clothing

Use 着 for suits, dresses, and outfits (clothes worn as a complete unit on the body, as opposed to flat items like t-shirts which use 枚). The pattern is mostly regular: いっちゃく (icchaku), にちゃく (nichaku), さんちゃく (sanchaku).

Example: スーツを二着買いました (スーツをにちゃくかいました / suutsu wo nichaku kaimashita) — I bought two suits.

Time Counters: 時, 分, 日, 月, 年

Time-related counters are absolutely critical for daily life and JLPT exams. They appear in the listening section of every test level. If you are building a study plan for learning Japanese, time counters should be among your first priorities.

時 (じ / ji) — O'clock

Use 時 for telling time on the clock. It is mostly regular, but note these readings: 4 o'clock is よじ (yoji, not yonji), 7 o'clock is しちじ (shichiji), and 9 o'clock is くじ (kuji, not kyuuji). These irregularities are among the most frequently tested items on the JLPT N5.

Example: 今三時です (いまさんじです / ima sanji desu) — It is three o'clock now.

分 (ふん・ぷん / fun / pun) — Minutes

Use 分 for minutes. The reading alternates between ふん (fun) and ぷん (pun) depending on the number. Minutes with ぷん: 1 (いっぷん / ippun), 3 (さんぷん / sanpun), 4 (よんぷん / yonpun), 6 (ろっぷん / roppun), 8 (はっぷん / happun), 10 (じゅっぷん / juppun). Minutes with ふん: 2 (にふん / nifun), 5 (ごふん / gofun), 7 (ななふん / nanafun), 9 (きゅうふん / kyuufun).

日 (にち / nichi) — Days of the Month

Days of the month use the counter 日, but the first ten days have highly irregular native Japanese readings that must be memorized individually. This is one of the trickiest parts of the Japanese counting system.

From the 11th onward (except the irregular ones listed above), days follow the regular pattern: じゅういちにち (juuichinichi, 11th), じゅうににち (juuninichi, 12th), and so on. Learning the first ten days and the exceptions at 14, 20, and 24 is essential for JLPT N5.

月 (がつ / gatsu) — Months of the Year

Japanese months are simply numbered: 一月 (いちがつ / ichigatsu, January) through 十二月 (じゅうにがつ / juunigatsu, December). This is one of the easiest parts of the counting system — no irregular readings at all. Note that がつ (gatsu) is for specific months, while げつ (getsu) is used for counting duration in months: 一ヶ月 (いっかげつ / ikkagetsu, one month), 二ヶ月 (にかげつ / nikagetsu, two months).

年 (ねん / nen) — Years

Use 年 for counting years and expressing specific years. The pattern is mostly regular: いちねん (ichinen, one year / the year 1), にねん (ninen, two years), さんねん (sannen, three years). The main irregularities are 4 years (よねん / yonen, not shinen) and the use of 年 with Japanese era names like 令和 (れいわ / Reiwa).

Example: 日本語を二年間勉強しています (にほんごをにねんかんべんきょうしています / nihongo wo ninenkan benkyou shite imasu) — I have been studying Japanese for two years.

Master Rendaku: Sound Change Rules Chart

Sound changes in Japanese counters follow predictable patterns based on the initial consonant of the counter. Once you learn these rules, you can predict the correct reading for any counter you encounter. Understanding Japanese grammar patterns like rendaku is crucial for natural-sounding speech.

The pattern to memorize: Numbers 1, 6, 8, and 10 cause the strongest changes (doubling or h→p). Number 3 causes h→b only. Numbers 2, 4, 5, 7, and 9 cause no changes at all. This pattern is consistent across all counters sharing the same initial sound, so learning it once means you can apply it everywhere.

Complete Counter Reference by Category

Below is a comprehensive reference table of 30+ counters organized by what they count. Use this as a quick-reference guide during your study sessions. For each counter, we list the kanji, reading, romaji, what it counts, and the JLPT level where it first appears.

Practice Examples: Counters in Context

The best way to internalize counters is to practice them in full sentences. Below are 15 practice sentences covering a variety of counters. Try reading each one, identifying the counter, and understanding why that specific counter was chosen. Using spaced repetition with these sentences will help them stick in long-term memory.

Tips for Mastering Japanese Counters

Learning over 30 counters with all their sound changes can feel overwhelming, but the right approach makes it manageable. Here are strategies that work, based on how successful JLPT candidates study.

1. Learn counters in groups by sound pattern. Once you master the sound changes for 本 (hon), you automatically know the pattern for 匹 (hiki) and 杯 (hai), because all h-counters follow the same rules. Learn one counter from each sound group thoroughly, and the rest become easy.

2. Practice with real objects. Walk around your home and count everything: three books on the shelf (さんさつ / sansatsu), two computers on the desk (にだい / nidai), five flat plates in the kitchen (ごまい / gomai). This physical practice embeds counters in your memory far better than abstract flashcard drilling.

3. Focus on JLPT N5 counters first. You do not need all 30+ counters immediately. For JLPT N5, focus on: つ, 人, 本, 枚, 台, 冊, 杯, 個, 階, 回, 歳, 時, 分, 日, 月, 年. That is roughly 16 counters. Add the remaining counters as you progress to N4 and beyond.

4. Use spaced repetition. Counters are the perfect candidate for spaced repetition study. Each counter with its 10 number forms creates discrete, testable flashcard items. JLPTLord's flashcard system includes all counters with audio pronunciation so you can hear the sound changes as you drill.

5. Listen for counters in native content. Once you know the basic counters, you will start hearing them everywhere in anime, dramas, podcasts, and conversations. Actively listening for counters in context reinforces your memory and helps you understand the natural speed and rhythm of counter usage.

6. When in doubt, use つ (tsu). In real conversation, using the general つ counter is always understood and never rude. It is far better to say みっつ (mittsu, three things) than to freeze up trying to remember the specific counter. Native speakers use つ as a casual fallback all the time. Save the precision for the JLPT exam and formal situations.

If you are building a study plan, our guide on the best way to learn Japanese in 2026 includes a detailed counter study schedule alongside grammar, vocabulary, and verb conjugation practice.

Common Counter Mistakes to Avoid

Mistake 1: Using the wrong counter for the noun. Saying ペンを三枚 (pen wo sanmai) instead of ペンを三本 (pen wo sanbon). Pens are long and thin (本), not flat (枚). While a native speaker will understand you, incorrect counters sound unnatural and will cost points on the JLPT.

Mistake 2: Forgetting rendaku sound changes. Saying さんほん (sanhon) instead of さんぼん (sanbon) for "three long things." Sound changes are not optional — they are mandatory pronunciations. Incorrect sound changes make your speech harder to understand.

Mistake 3: Using Sino-Japanese numbers with the つ counter. Saying いちつ (ichitsu) instead of ひとつ (hitotsu). The つ counter exclusively uses the native Japanese number system (hito, futa, mi, yo, itsu, mu, nana, ya, kokono, too).

Mistake 4: Forgetting the irregular readings for people and days. Saying いちにん (ichinin) instead of ひとり (hitori) for "one person," or saying いちにち (ichinichi) instead of ついたち (tsuitachi) for "the first day of the month." These irregular forms must be memorized individually.

Mistake 5: Placing the counter in the wrong position. The counter phrase should come before the verb or before the noun with の (no). Saying 三本のペンを買いました or ペンを三本買いました are both correct, but ペン三本を買いました (counter between noun and particle) is ungrammatical.

Frequently Asked Questions About Japanese Counters