How to Say ‘I'm 25 years old.’ in Japanese
二十五さいです。
にじゅうごさいです。
💬 Usage Tip: Pattern: [数字]+[さい]+[です]. For “I’m … years old,” Japanese usually doesn’t need “I” if context is clear.
🇯🇵 In Japan: People sometimes add [です] even in short self-intros to keep things polite, especially in classrooms and workplaces.
Word-by-Word Breakdown
二十にじゅう
[nijuu]
twenty (part of 25)
二十 (にじゅう) means “20.” Combined with 五 (5) to make 25: 二十五.
二十五さいです。
I’m 25 years old.
五ご
[go]
five (part of 25)
五 (ご) is “5.” With 二十 it forms 二十五 (25).
二十五さいです。
I’m 25 years old.
さいさい
[sai]
years old (age counter)
さい is the counter for age. Number + さい = “__ years old.”
二十五さいです。
I’m 25 years old.
ですです
[desu]
to be (polite); is/am/are
です ends the sentence politely. Pattern: [number]さいです.
二十五さいです。
I’m 25 years old.
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