にんpeople
studentemployeefriend
Irregular readings2 irregular
#WrittenReading
1一人ひとり
2二人ふたり
There are 30 students in the class.
I went to see a movie alone.
The two of us had a meal together.
一人 (ひとり) and 二人 (ふたり) are completely irregular. From 三人 onwards, にん is used regularly.
〜つgeneral objects when no specific counter applies (1–10 only)
Irregular readings10 irregular
#WrittenReading
1一つひとつ
2二つふたつ
3三つみっつ
4四つよっつ
5五ついつつ
6六つむっつ
7七つななつ
8八つやっつ
9九つここのつ
10とお
Please give me three apples.
There are two problems.
May I ask one thing?
The つ system only goes up to 10 - there is no 十一つ. For 11 and above, use the appropriate specific counter or 個 as a general fallback. All readings in this system are irregular, as they come from the native Japanese number system rather than the Sino-Japanese one.
small compact objects
appleeggstonecandyeraser
Irregular readings4 irregular
#WrittenReading
1一個いっこ
6六個ろっこ
8八個はっこ
10十個じゅっこ
I bought six eggs.
Please give me one apple.
There are ten candies in this bag.
まいflat thin objects
paperstampplateshirtblanket
No irregular readings
Please give me three sheets of paper.
I bought two shirts.
There is only one stamp left.
ほんlong thin objects
pencilchopstickbeer bottletreeriverphone call
Irregular readings4 irregular
#WrittenReading
1一本いっぽん
6六本ろっぽん
8八本はっぽん
10十本じゅっぽん
I bought one bottle of beer.
There are three pencils.
May I make one phone call?
Also used for phone calls, rivers, and roads - anything long and linear in shape or nature.
さつbound books and notebooks
bookmagazinenotebookdictionary
Irregular readings3 irregular
#WrittenReading
1一冊いっさつ
8八冊はっさつ
10十冊じゅっさつ
I read three books this month.
I want to buy one dictionary.
I need two notebooks.
ひきsmall to medium animals (excluding birds and large animals)
catdogfishinsectrabbit
Irregular readings4 irregular
#WrittenReading
1一匹いっぴき
6六匹ろっぴき
8八匹はっぴき
10十匹じゅっぴき
I have two cats.
How many fish are in the pond?
One dog has gone missing.
Used for small to medium animals. Do not use for birds (use 羽) or large animals like cows and horses (use 頭).
とうlarge animals
cowhorseelephantwhale
Irregular readings1 irregular
#WrittenReading
1一頭いっとう
There are 50 cows on this farm.
One elephant came to the zoo.
We are raising three horses.
Used for large animals. Smaller animals use 匹, birds use 羽.
birds and rabbits
birdchickenrabbitpigeon
Irregular readings4 irregular
#WrittenReading
1一羽いちわ
6六羽ろくわ
8八羽はちわ
10十羽じゅっわ
There are three birds in the park.
We keep five chickens.
There is one bird with a different colour.
Rabbits are counted with 羽 rather than 匹 in formal and traditional contexts, though 匹 is also used in casual speech.
ちゃくgarments and articles of clothing
suitkimonocoatdress
Irregular readings3 irregular
#WrittenReading
1一着いっちゃく
8八着はっちゃく
10十着じゅっちゃく
I got one new suit made.
There are three kimonos.
I only brought two outfits on the trip.
Used for whole garments or outfits. Individual items like socks or shirts are more commonly counted with 枚 in casual speech.
そくpairs of footwear and socks
shoessocksbootssandals
Irregular readings3 irregular
#WrittenReading
1一足いっそく
8八足はっそく
10十足じゅっそく
I bought one pair of shoes.
I only have three pairs of socks left.
These boots are discounted when you buy two pairs.
Counts pairs, not individual items. One pair of shoes = 一足, not 二足.
だいmachines, vehicles, and large appliances
carbicyclecomputerrefrigeratortelevision
No irregular readings
I bought one car.
There are five computers in the office.
Three bicycles are parked.
はいcups, glasses, and bowls of liquid or food
coffeeteawaterramenalcohol
Irregular readings4 irregular
#WrittenReading
1一杯いっぱい
6六杯ろっぱい
8八杯はっぱい
10十杯じゅっぱい
Could I have one cup of coffee?
I drank three glasses of water.
I ended up eating two bowls of ramen.
一杯 (いっぱい) also means 'full' or 'a lot' as a standalone word, so context matters.
歳/才さいage
Irregular readings4 irregular
#WrittenReading
1一歳いっさい
8八歳はっさい
10十歳じゅっさい / とお
20二十歳はたち
I am 25 years old.
My son will turn 8 this year.
How old are you?
才 is a simplified informal version of 歳, often used when writing by hand or in casual contexts. 十歳 can also be read as とお in very traditional contexts. 二十歳 (はたち) is a well-known special reading tied to the age of adulthood in Japan.
かいnumber of times / occurrences
Irregular readings4 irregular
#WrittenReading
1一回いっかい
6六回ろっかい
8八回はっかい
10十回じゅっかい
Please take the medicine three times a day.
I went to the gym twice this week.
I practiced many times.
Not to be confused with 階 (floor level), which shares the same reading かい.
かいfloor levels of a building
Irregular readings4 irregular
#WrittenReading
1一階いっかい
6六階ろっかい
8八階はっかい
10十階じゅっかい
My office is on the 5th floor.
I will go to the 3rd floor by elevator.
I am waiting at the café on the first floor.
Not to be confused with 回 (number of times), which shares the same reading かい. Note that 三階 is often read さんがい rather than さんかい in natural speech.
けんcases, matters, and incidents
incidentemailissueapplication
No irregular readings
There are three unread emails.
I have five meetings today.
Last month, there were two incidents in this area.
Common in workplace and formal contexts. Often seen in business emails and reports.
ヶ所/箇所かしょlocations and places
tourist spotbranch officewound / scratch
Irregular readings4 irregular
#WrittenReading
1一ヶ所いっかしょ
6六ヶ所ろっかしょ
8八ヶ所はっかしょ
10十ヶ所じゅっかしょ
There are three branch offices in the country.
I visited five tourist spots on the trip.
There were two typos in the report.
びょうseconds
No irregular readings
The traffic light changes in thirty seconds.
I don't want to waste even one second.
He ran 100 metres in ten seconds.
No irregular readings. The counter is consistent across all numbers.
ふん/ぷんminutes
Irregular readings6 irregular
#WrittenReading
1一分いっぷん
3三分さんぷん
4四分よんぷん
6六分ろっぷん
8八分はっぷん
10十分じゅっぷん
It takes ten minutes to walk to the station.
Please wait just three minutes.
The class is one hour and thirty minutes long.
The reading changes to ぷん after 1、3、4、6、8、10. 十分 (じゅっぷん) also means 'enough / sufficiently' as a separate word.
時間じかんduration in hours
No irregular readings
The meeting took two hours.
I study for one hour every day.
Each episode of this drama is 45 minutes, totalling ten hours.
Do not confuse with 時 (じ), which is used for clock times (e.g. 三時 = 3 o'clock). 時間 is for durations only.
にち/かdays (dates and durations)
Irregular readings13 irregular
#WrittenReading
1一日ついたち (date) / いちにち (duration)
2二日ふつか
3三日みっか
4四日よっか
5五日いつか
6六日むいか
7七日なのか
8八日ようか
9九日ここのか
10十日とおか
14十四日じゅうよっか
20二十日はつか
24二十四日にじゅうよっか
My birthday is March 3rd.
The trip was five days long.
Please take the medicine three times a day.
一日 is the only entry with a split reading - ついたち when referring to the 1st of the month, いちにち when referring to a full day's duration. All other days use the same reading for both date and duration. Beyond 10, most follow じゅう + the irregular reading (e.g. 十四日 = じゅうよっか), with 二十日 (はつか) being a notable exception.
週間しゅうかんduration in weeks
No irregular readings
Summer vacation is three weeks long.
I plan to finish it within one week.
I went travelling for two weeks.
一週間 (いっしゅうかん) is slightly irregular - the pronunciation of 一 shifts to いっ due to the following し.
ヶ月かげつduration in months
Irregular readings4 irregular
#WrittenReading
1一ヶ月いっかげつ
6六ヶ月ろっかげつ
8八ヶ月はっかげつ
10十ヶ月じゅっかげつ
This project will take three months.
I lived in Japan for six months.
I read ten books in one month.
Used for durations only. For calendar months (January, February etc.) use 月 (がつ) instead.
年間ねんかんduration in years
No irregular readings
I have been studying Japanese for three years.
I have been working at this company for ten years.
I returned home after completing one year of studying abroad.
はくnumber of nights stayed
Irregular readings4 irregular
#WrittenReading
1一泊いっぱく
6六泊ろっぱく
8八泊はっぱく
10十泊じゅっぱく
I am planning a three-night, four-day trip.
I stayed at the hotel for one night.
This business trip is two nights and three days.
Commonly paired with 〜日 to express trip length, e.g. 三泊四日 (three nights, four days).
lessons or chapters in a textbook
textbookstudy material
No irregular readings
Today I studied lesson 3.
The textbook has 20 lessons in total.
Let's start from lesson 1.
ページぺーじpages
No irregular readings
Please open your textbook to page 30.
Please summarize the report within five pages.
I read ten pages a day.
第〜だいordinal numbering (chapters, rounds, episodes)
No irregular readings
Please read chapter one.
The third meeting is next week.
I finished in second place.
第 is a prefix, not a standalone counter. It attaches before the number and counter to express order or ranking, similar to 'the Nth' in English. Unlike other counters, it has no irregular readings.