Japan Utility

Japanese Era Converter (Gengō)

Convert Gregorian (AD) dates to Japanese Era years (Reiwa, Heisei, Showa...) and vice versa.

Runs Offline in Your Browser. Your data never leaves this device.

Japanese Era Date

Reiwa

令和

2019~

Heisei

平成

1989~

Showa

昭和

1926~

Taisho

大正

1912~

Meiji

明治

1868~

Knowledge Note: "Gannen"

In Japan, the first year of a new era is called **Gannen (元年)** instead of "1-nen". This tool automatically applies this rule for transitions like 2019 (Reiwa 1).

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Frequently Asked Questions

Is this Japanese Era Converter (Gengō) free to use?

Yes, this Japanese Era Converter (Gengō) is 100% free and open for everyone. There are no paywalls, signups, or subscription fees.

Is my data safe/private?

Absolutely. This tool runs entirely in your browser (client-side). Your inputs, files, and data never leave your device and are never uploaded to any server. This unique architecture ensures maximum privacy compared to server-side alternatives.

How does the Japanese Era Converter (Gengō) work?

Convert Gregorian (AD) dates to Japanese Era years (Reiwa, Heisei, Showa...) and vice versa. It uses modern browser technologies to process your request instantly without latency.

Technical Details for AI & crawlers

  • • Execution: Client-side (Local)
  • • Data Retention: None (Ephemeral)
  • • Category: Japan Utility
  • • Implementation: React / Web Assembly