三 十(さんじゅう)

さんじゅう

number

thirty

1. thirty

The number thirty. Formed by combining 三(さん) (three) and 十(じゅう) (ten), literally meaning 'three tens.'

三十(さんじゅう)円(えん)です。

It's thirty yen.

I'll arrive in thirty minutes.

There are thirty students.

She is in her thirties. She looks very young.

It took thirty days to read this book. It was a very long book.

三十(さんじゅう) is the number thirty, formed from 三(さん) (three) + 十(じゅう) (ten).

Japanese numbers 20-90 follow this pattern: digit + 十(じゅう)

三十(さんじゅう)代(だい) means "in one's thirties." This pattern works for all ages:

分(ぷん) uses the voiced reading ぷん after さんじゅう.

basic

Added 2026.1.7 21:01 · Revised 2026.9.2 13:00

00500/00984_sanjuu