Age and school-year estimates for those born in 1998

Man-nenrei, kazoedoshi, wareki, eto, and school years for people born in 1998, as of 30 August 2026. If you know the month and day, use the age calculator (this page assumes 2 April for a year-level lookup).

As-of date：30 August 2026(updated to today when you view the page)

Legal age (today)

28years

Legal age (31 Dec)

28years

Kazoedoshi

29years

Wareki (assumes 2 April)

平成10年4月2日

Eto

戊寅（寅）

Elementary school

April 2005

Junior high

April 2011

High school

April 2014

High-school graduation

March 2017

Kanreki (approx. year)

2057

Facts on this page

・Legal age as of 30 August 2026 is 28

・Legal age on 31 December 2026 is 28

・Kazoedoshi is 29

・Wareki date of birth (assumes 2 April) is 平成10年4月2日

・Eto is 戊寅 (寅)

・Elementary school starts April 2005

・Junior high starts April 2011

・High school starts April 2014

・High-school graduation is March 2017

・Kanreki (kazoedoshi) approx. year is 2057

・Yakudoshi (male, kazoedoshi 29): none

・Yakudoshi (female, kazoedoshi 29): none

Assumptions

For searches without a month and day, we assume a 2 April birthday.

The static as-of date (build time) is 30 August 2026. After load we update it to today.