Karu Tools

Date and time

Japanese Year / Date Era Converter

Convert Gregorian years and dates into Japanese era notation from Meiji onward, including Reiwa, Heisei, Showa, and exact era transition dates.

Specify month and day

Use this when an era changed during the year and the exact date matters.

Result

令和 (Reiwa) year 8

2026 maps to 令和 (Reiwa) year 8.

Use the Japanese era table to compare years in a list.

Japanese Year and Date Converter

Enter a Gregorian year or full date to convert it into Japanese era notation from Meiji onward. For years when the era changed, such as 2019, the result shows both era names unless you specify the exact month and day.

Use it as a Japanese year converter for quick checks such as 2026 to Reiwa 8, or as a Japanese date converter when forms, certificates, and records require exact era notation.

Open detailed notes

When did Reiwa 1 begin?

Reiwa 1 began on May 1, 2019. Dates from January 1 through April 30, 2019 are Heisei 31, while dates from May 1 onward are Reiwa 1.

Heisei 31 and Reiwa 1 in 2019

Because the era changed during 2019, entering only the year shows both Heisei 31 and Reiwa 1. Enter the full date when checking certificates, records, or forms from an era transition year.

Common conversion examples

2026 is Reiwa 8. January 7, 1989 is Showa 64, while January 8, 1989 is Heisei 1. Exact dates matter around Japanese calendar transitions.

How to use it for documents

  • Birth dates, contract dates, certificates, and official records may need exact era notation.
  • If month and day are blank, the converter works at the year level and shows multiple era names for transition years.
  • Use the Japanese era table when you want to compare many years at once.

Frequently asked questions

Which eras are supported?

The converter supports Meiji, Taisho, Showa, Heisei, and Reiwa. Dates before the Meiji era are not supported.

Can I convert with only the Gregorian year?

Yes. For years when the era changed, entering only the year shows multiple Japanese era labels. Enter the full date when exact notation matters.

Can I use it as a Japanese calendar date converter?

Yes. Enter a Gregorian year, or enter the exact month and day when you need to distinguish dates around era transitions such as Heisei 31 and Reiwa 1 in 2019.

Does it show first-year era notation?

Yes. The first year of each era is shown as the first year notation rather than simply year 1.

Can I check a year-by-year list?

Yes. Use the Japanese era table when you want to compare Gregorian years and Japanese era names in a list.