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Convert Western years to Japanese Eras.

📘 How to Use

  1. Enter the Gregorian year or Japanese era (Era name and year).
  2. Automatically view the conversion to the other format.
  3. Copy the result and paste it into your documents or forms.

Japanese Era Converter

Japanese Era Converter

Convert Western years to Japanese Eras.

AD to Japanese Era

Japanese Era to AD

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Convert Japanese Eras and Western Years

💡 About This Tool

Instantly sync the Western calendar (A.D.) with the Japanese imperial era system (Gengo). Whether you're researching history, watching period dramas, or checking the date on a Japanese coin, this tool provides immediate, accurate conversions.

📘 How to Use

  • Convert both ways: Switch between Western years (e.g., 2024) and Japanese Eras (e.g., Reiwa 6) seamlessly.
  • Project future dates: Calculate upcoming milestones, like determining the Western year for Reiwa 15.
  • Explore modern history: Access data for all five modern eras: Meiji, Taisho, Showa, Heisei, and Reiwa.

🧐 Frequently Asked Questions

How are transition years handled?

When an emperor passes or abdicates, the era changes mid-year. For example, 2019 includes both Heisei 31 (until April 30) and Reiwa 1 (from May 1). This tool identifies the era corresponding to the year, but remember to check the specific month for historical precision.

What does "Gannen" mean?

In Japan, the first year of a new era is referred to as Gannen (元年) rather than "Year 1." For example, 2019 is officially Reiwa Gannen.

📚 Trivia: The Seven-Day Year

The Showa era officially ended in its 64th year, but Showa 64 lasted only seven days (January 1–7, 1989). Because of this brief window, coins minted with the Showa 64 date are rare and highly sought after by collectors.