Japanese Era Converter (元号 ↔ Western)

Convert between Western year and Japanese era (Meiji, Taisho, Showa, Heisei, Reiwa). Handles mid-year era transitions accurately — Heisei 1 begins 1989-01-08, Reiwa 1 begins 2019-05-01.

Date → Era

YearMonthDay

ResultReiwa 8Reiwa 8 · R8

Era → Year

EraYear of era (元 = 1)

Result2026Reiwa 8

Era boundaries follow the official imperial transition dates. The conversion is calendar-aware so 1989-01-07 maps to Showa 64, but 1989-01-08 maps to Heisei 1.

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