Easily convert between Western years (Seireki) and Japanese imperial eras (Wareki). Determine current age, school grades, and zodiac quickly.
* School enrollment year differs by 1 year between early and late births
Reiwa began on May 1, 2019. Heisei: 1989–2019, Showa: 1926–1989.
Kanreki (60) means the zodiac cycle returns to your birth year.
Yakudoshi (unlucky ages) are traditionally calculated by 'kazoe-doshi' (counting age), which may differ by 1–2 years from the displayed age.
Japan's legal adult age was lowered from 20 to 18 in April 2022.
The zodiac is a 12-year cycle originating in East Asia, starting with Rat and ending with Pig.
Q1
We support Meiji (1868) through the present, including Meiji, Taisho, Showa, Heisei, and Reiwa.
Q2
They're based on Japan's standard system. Gap years, early/late admission, or grade repetition are not considered.
Q3
We display standard ages. Traditional yakudoshi uses kazoe-doshi (counting age), which can differ. Consult a shrine for official advice.
Q4
It's a 12-year cycle. The year 4 AD is the Rat year. Divide by 12 and the remainder determines the zodiac.
Q5
Yes! The School Years tab shows enrollment and graduation in both Western and Japanese era formats, perfect for resumes and CVs.
This information is general. Verify with official sources for important matters.