さい

sai
Common N5 counter

Translations

1. years old
2. age

Notes

The kanji 歳 is commonly used as a counter for age in years. It is interchangeable with the simpler kanji 才, especially in informal contexts.

Examples

彼は二十さいです。

Kare wa nijussai desu.

He is twenty years old.

あなたのさいは何ですか?

Anata no sai wa nan desu ka?

What is your age?

彼女は五十さいに見えません。

Kanojo wa gojussai ni miemasen.

She doesn't look fifty years old.