Japanese Counters for Beginners: How to Count Things (つ, 個, 本, 匹, and More)
In English, counting is easy: two dogs, two coffees, two tickets — the word "two" never changes.
Japanese works differently. You attach a small counter word to the number, and the counter changes depending on what you are counting.
It sounds intimidating, but you can get surprisingly far with just a couple of them. Let's make it friendly.
What is a counter?
A counter (助数詞 / josūshi) is a little word that comes after a number when you count things.
The pattern is simple:
number + counter
You attach it to the thing you are counting, usually with the particle を:
りんごを三個食べた。 (Ringo o san-ko tabeta.) "I ate three apples."
If particles like を and Japanese word order still feel new, start with Japanese vs. English sentence structure.
Start here: つ, the universal counter
If you learn only one counter, learn つ.
It works for most everyday objects, and it needs no kanji:
一つ (hitotsu) — one 二つ (futatsu) — two 三つ (mittsu) — three 四つ (yottsu) — four 五つ (itsutsu) — five 六つ (muttsu) — six 七つ (nanatsu) — seven 八つ (yattsu) — eight 九つ (kokonotsu) — nine 十 (tō) — ten
After ten, just use the plain numbers: 十一, 十二…
This is the counter you'll reach for most when ordering — "one of these, please." See how to order at a restaurant or café.
個 (ko) — small objects
For small, roundish things: apples, eggs, erasers, stones.
一個 ikko · 二個 niko · 三個 sanko · 六個 rokko · 十個 jukko
Notice how 1, 6, and 10 double the k-sound. That pattern comes back a lot — more on it below.
人 (nin) — people
一人 hitori · 二人 futari · 三人 sannin · 四人 yonin · 五人 gonin
The first two are irregular, so memorize them as a pair: hitori, futari.
匹 (hiki) — small animals
Cats, dogs, fish, insects.
一匹 ippiki · 二匹 nihiki · 三匹 sanbiki · 六匹 roppiki · 十匹 juppiki
This little counter shows off every sound change at once — great practice.
For large animals (horses, cows) use 頭 (tō). For birds and rabbits, use 羽 (wa).
本 (hon) — long, thin things
Pens, bottles, umbrellas, bananas, even trains.
一本 ippon · 二本 nihon · 三本 sanbon · 六本 roppon · 十本 juppon
Fun fact: the Tokyo district Roppongi (六本木) literally means "six trees." Counters are hiding everywhere once you start noticing.
枚 (mai) — flat, thin things
Paper, tickets, plates, T-shirts, stamps.
Nice and regular, no surprises:
一枚 ichimai · 二枚 nimai · 三枚 sanmai
杯 (hai) — cupfuls and glassfuls
Drinks — and, oddly, squid and octopus.
一杯 ippai · 二杯 nihai · 三杯 sanbai · 六杯 roppai
コーヒーをもう一杯ください。 (Kōhī o mō ippai kudasai.) "One more cup of coffee, please."
A few more worth knowing
冊 (satsu) — books and magazines 台 (dai) — machines and vehicles (cars, computers) 回 (kai) — number of times 階 (kai) — floors of a building 歳 / 才 (sai) — age 円 (en) — money (yen)
The sound-change pattern
You have probably spotted the theme: with 1, 6, 8, and 10, counters often get a little sound bump.
Counters starting with h (本, 匹, 杯) tend to become p: ippon, roppon, juppon.
With 3, that h often softens to b: sanbon, sanbai, sanbiki.
Counters starting with k (個, 回) tend to double: ikko, rokko, jukko.
Don't drill these in isolation. Say them inside real phrases, and your mouth will learn the rhythm faster than your memory will.
When you forget — and you will
Blanking on the right counter? You have two safe escape hatches:
Use つ (hitotsu, futatsu…) for objects up to ten.
Use 個 (ko) for small things.
Native speakers will understand you perfectly. Precision comes with time; communication comes first.
Common mistakes
Wrong counter for the thing. A cat is 匹, not 個. When unsure, fall back to つ.
Forgetting the sound changes — saying "san-hon" instead of sanbon.
Counter placement. Number + counter comes after the noun: りんごを 三個 食べる, not 三個のりんごを (the 〜の version exists, but carries a different nuance).
Want more everyday words to count? Browse the N5 Vocabulary list.
Mini practice
Try these before checking:
two cats → ?
three cups of coffee → ?
one apple → ?
Answers
猫が二匹 (neko ga nihiki)
コーヒーを三杯 (kōhī o sanbai)
りんごを一つ / 一個 (ringo o hitotsu / ikko)
Wrap-up
Counters feel like a wall at first, but you only need a handful to sound natural: つ and 個 for objects, 人 for people, and 本・枚・匹・杯 for the everyday rest.
Learn the sound-change rhythm through real phrases, and lean on つ whenever you're stuck.
Want to drill counters until they feel automatic? I offer relaxed, English-friendly 1-on-1 lessons — book a session and we'll practice with real objects around you. — Naoki, cozykotobar
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