Japan · Date Conversion
Japanese era converter.
Convert Gregorian dates to Wareki, or enter a Reiwa, Heisei, Shōwa, Taishō or Meiji date to get its exact Gregorian equivalent.
Convert a date
Result
Enter a date to convert it.
Era boundaries are date-specific
Japanese era years do not always begin on 1 January. Reiwa began on 1 May 2019, Heisei on 8 January 1989, Shōwa on 25 December 1926, Taishō on 30 July 1912, and the modern Meiji boundary used here is 23 October 1868. The converter rejects dates that fall outside the selected era instead of applying only a year offset.
Sources and limits
Era boundaries follow Unicode LDML and Japan’s Cabinet Office era reference. Sources checked 29 September 2026. This practical converter covers Meiji through Reiwa; it is not a pre-Meiji historical calendar.
All calculations run locally in your browser. No date is uploaded or stored.