What year range is supported?

From the first year of Meiji (1868) to the present.

Are leap years calculated correctly?

Yes. Leap years are considered for accurate calculations.

Is my data sent to a server?

No. All processing happens in your browser.

Can I specify month and day for exact era calculation?

Yes. Even if a date crosses an era boundary (e.g., May 1, 2019 for the start of Reiwa), the tool calculates the exact era and year considering the month and day.

Can multiple years be converted at once?

This tool supports conversion one at a time. For batch conversion of multiple entries, consider using a separate CSV-based solution.

Year to Wareki (Japanese Era) Converter

Convert Gregorian years to Wareki. Supports Reiwa, Heisei, Showa, Taisho, Meiji. Shows zodiac and age.

Gregorian

How to Use

Enter a year in the Gregorian calendar
The corresponding Japanese era name is automatically displayed
Chinese zodiac and age are also shown

FAQ

What year range is supported?: From the first year of Meiji (1868) to the present.
Are leap years calculated correctly?: Yes. Leap years are considered for accurate calculations.
Is my data sent to a server?: No. All processing happens in your browser.
Can I specify month and day for exact era calculation?: Yes. Even if a date crosses an era boundary (e.g., May 1, 2019 for the start of Reiwa), the tool calculates the exact era and year considering the month and day.
Can multiple years be converted at once?: This tool supports conversion one at a time. For batch conversion of multiple entries, consider using a separate CSV-based solution.

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Update History

Last Updated: 2026-02-21

2026-02-21 Initial release