Japanese Lesson – Introduction to Japanese Numbers

Hello Everyone,

In today’s lesson we are going to discover numbers in Japanese. Once again a subject not as simple as it may seem. Let’s go!


In Japanese, numbers are either written using kanji (refer to The Japanese Writing System for a quick introduction on kanji if you don’t know what it is) or Hindu-Arabic numerals (0, 1, 2…). Both systems are frequently used, therefore learning the kanji version is a must but as you will see in the next chapter these kanji are quite easy to learn.

One other important fact to know about numbers in Japanese is that there is not one, but two ways of pronouncing them: The first one is an heritage from the ancient Japanese language (kun-yomi) and is used generally to count things, people… and the other one was unherited from the Chinese (on-yomi) and is used to count, express order in maths…

From 0 to 10

Let’s have a look at the numbers from 0 to 10. The table below provides the Hindu-Arabic numeral, its kanji version, and both pronounciations.

Number Kanji On-yomi Kun-yomi
0 零 / 0 れい
1 いち ひと・つ
2 ふた・つ
3 さん み・つ
4 よん / し よ・つ
5 いつ・つ
6 ろく むっ・つ
7 なな / しち なな・つ
8 はち や・つ
9 きゅう / く ここの・つ
10 じゅう とう

Kun-yomi is mostly used for numbers from 1 to 10, and a few other exceptions. For other numbers Japanese people switch back to using on-yomi.

A few notes also regarding the pronouciation:

  • The number 4 can be either pronounced し or よん. Because し also means / death / the use of よん is generally favoured.
  • This is the same for number 7 which can be either pronounced しち or なな. Since しち also has the meaning of / imminent death /, the reading なな is favoured.
  • And the same goes for the number 9 which can be pronounced く or きゅう. Since く also means / suffering /, the reading きゅう is generally favoured.

From 10 to Infinity, and Beyond

Numbers above 10 are simply built by stacking quantities of different place names (tens, hundreds…), like in English, with step changes every 10,000.

The table below presents the place names that are the most often encountered:

100 ひゃく
1,000 せん
10,000 まん
100,000,000 おく
1,000,000,000,000 ちょう

So, for instance:


ご ひゃく さん じゅう に
/ five “hundreds” three “tens” two /

100,000 (= 10 * 10,000)
じゅう まん
/ ten “ten-thousands” /

Quite easy isn’t it. Well in fact not as much as it should, because the pronounciation of place names or numbers have some irregularities that I will present in the following tables:

百 / ひゃく

100 / 百 ひゃく hyaku, and not ichi hyaku
200 / 二百 にひゃく ni hyaku
300 / 三百 さんびゃ san byaku, and not san hyaku
400 / 四百 よんひゃく yon hyaku
500 / 五百 ごひゃく go hyaku
600 / 六百 ろっぴゃく roppyaku, and not roku hyaku
700 / 七百 ななひゃく nana hyaku
800 / 八百 はっぴゃく happyaku, and not hachi hyaku
900 / 九百 きゅうひゃく kyu~ hyaku

千 / せん

1000 / 一千 or 千 せん or いっせん sen or issen
2000 / 二千 にせん ni sen
3000 / 三千 さん san zen, and not san sen
4000 / 四千 よんせん yon sen
5000 / 五千 ごせん go sen
6000 / 六千 ろくせん roku sen
7000 / 七千 ななせん nana sen
8000 / 八千 はっせん hassen, and not hachi sen
9000 / 九千 きゅうせん kyu~ sen

There is no utter complexity in all of this, but you have to get the reflex that generally numbers build around figures 1, 3, 6 and 8 in the Sino Japanese system have some irregularities.

Then, once these rules are mastered, building numbers is straightforward ^^


Select the range you want to exercise on and click on the NEW button to draw a new number.
Questions will alternate between Indo-Arabic numbers for which you should determine the Japanese pronunciation, and Japanese numbers that you shall be able to read and for which you should also guess the meaning.
Click on the number to get the answer.


Here we are for this first part of the lesson. In the next part we will focus on the use of the Japanese numbering system and see how we can count different things.

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