一 is the kanji for 1. Learn its shape and use its different readings in words you can actually say.

The idea

一 has 1 stroke. Draw one horizontal stroke from left to right. Read the table aloud: the independent number is いち, but the reading changes with the word. For example, 一月 is いちがつ, while 一日 as a calendar date is ついたち.

Patterns to compare
Japanese formMeaning or situation
一いちnumber: 1
一ひとつgeneral objects: 1
一人ひとりpeople: 1
一本いっぽんlong objects: 1
一時いちじtime: 1 o’clock
一日ついたちday of the month: 1
一月いちがつmonth: January

Examples

  • 今いまは一時いちじです。It is 1 o’clock now.
  • りんごを一ひとつ買かいます。I buy 1 apple.
  • 店みせに一人ひとりいます。There is 1 person in the shop.
  • 今日きょうは一日ついたちです。Today is the 1st of the month.
  • 一月いちがつに旅行りょこうします。I travel in January.
  • 鉛筆えんぴつを一本いっぽん使つかいます。I use 1 pencil.

Read-aloud uses a synthetic Japanese voice available on your device. Voice quality and availability vary; it does not assess your pronunciation.

Watch out

Do not guess every reading from the number alone: 一人 is ひとり and 一本 is いっぽん. Compare the shape of 一 with 二; check the source for stroke order. 一日 can also mean a whole day, read いちにち.

Try it yourself

  1. Write the number 1 as a kanji.

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    一

    The number 1 is written 一; compare its shape with 二.

  2. Write the reading of day 1 of the month in hiragana.

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    ついたち

    For the day of the month, 一日 is read ついたち; it is a complete date word.

  3. Write the reading for 1 person in hiragana.

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    ひとり

    For people, 一人 is read ひとり; learn the counter as a whole.

  4. Write the reading for 1 pencil in hiragana.

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    いっぽん

    For long objects, 一本 is read いっぽん; 本 is the counter used for pencils.

Use it today

Write 一 three times in stroke order. Then say a date, a time and a quantity using this character; check each full reading in the table.