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How to Say ‘To turn one year old’ in Japanese

一歳になる

いっさいになる

💬 Usage Tip: Literally, it means 'to become one year'.

Phrase Breakdown

一歳

になる

Word-by-Word Breakdown

いっ

[itsu]

one

The number 1.

Example

一週間後。

One week later.

さい

[sai]

years old

Refers to a person's age.

Example

歳を感じる。

I feel my age.

[ni]

to

Indicates a direction or goal.

Example

学校に行く。

Go to school.

なるなる

[naru]

to become

Indicates a change of state.

Example

先生になる。

Become a teacher.

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