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How to Say ‘I am 25 years old.’ in Japanese

二十五さいです。

25さいです。

💬 Usage Tip: Pattern: age + [さいです]. More standard writing is [二十五歳です] or [25歳です].

🇯🇵 In Japan: In self-introductions, stating age is common in casual settings (classes, hobby circles), but less common in professional intros unless relevant.

Word-by-Word Breakdown

二十にじゅう

[nijuu]

twenty

The number 20. Here it combines with 五 to make 二十五 (25) for stating age.

Example

わたしは二十五さいです。

I am 25 years old.

[go]

five

The number 5. Added to 二十 (20) to form 二十五 (25).

Example

わたしは二十五さいです。

I am 25 years old.

さいさい

[sai]

years old (age counter)

Counter used to say someone’s age: number + さい.

Example

わたしは二十五さいです。

I am 25 years old.

ですです

[desu]

am/is/are (polite)

Polite copula used to finish a statement. In age statements, it’s ‘(I) am … years old.’

Example

わたしは二十五さいです。

I am 25 years old.

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