Heisei to Western Year Converter — 平成 西暦 変換
平成を西暦に変換 — Convert Heisei years (平成1年–31年) to 1989–2019
Convert any Heisei era year (平成) to the Western Gregorian calendar instantly.
The Heisei era ran from 1989 to 2019 — enter any Heisei year from 1 to 31
to find the Western equivalent. Free, no login required.
Complete Heisei Year Chart — 平成 西暦 早見表 (全31年)
| Heisei (平成) |
Western Year |
Notes |
| 平成元年 (1年) | 1989 | Started Jan 8 — first 7 days were Showa 64 |
| 平成2年 | 1990 | |
| 平成3年 | 1991 | |
| 平成4年 | 1992 | |
| 平成5年 | 1993 | |
| 平成6年 | 1994 | |
| 平成7年 | 1995 | Hanshin earthquake (Jan 17) |
| 平成8年 | 1996 | |
| 平成9年 | 1997 | |
| 平成10年 | 1998 | |
| 平成11年 | 1999 | |
| 平成12年 | 2000 | |
| 平成13年 | 2001 | |
| 平成14年 | 2002 | |
| 平成15年 | 2003 | |
| 平成16年 | 2004 | |
| 平成17年 | 2005 | |
| 平成18年 | 2006 | |
| 平成19年 | 2007 | |
| 平成20年 | 2008 | |
| 平成21年 | 2009 | |
| 平成22年 | 2010 | |
| 平成23年 | 2011 | Tohoku earthquake (Mar 11) |
| 平成24年 | 2012 | |
| 平成25年 | 2013 | |
| 平成26年 | 2014 | |
| 平成27年 | 2015 | |
| 平成28年 | 2016 | |
| 平成29年 | 2017 | |
| 平成30年 | 2018 | |
| 平成31年 | 2019 | Ended Apr 30 — Reiwa began May 1 |
平成元年 (1989) started on January 8 — January 1–7, 1989 were Showa 64.
平成31年 (2019) ended on April 30 — the Reiwa era began May 1, 2019.
How to Convert Heisei Years to Western Years (平成 西暦 変換方法)
Converting a Heisei year (平成) to the Western Gregorian calendar is simple:
add 1988 to the Heisei year number. For example,
Heisei 30 + 1988 = 2018, and Heisei 1 + 1988 = 1989. To convert the other
way — Western to Heisei — subtract 1988. For instance, 2010 − 1988 = Heisei 22.
Use the converter above or the complete reference table below for instant lookups.
The Heisei era (平成, meaning "Achieving Peace") began on January 8, 1989,
following the death of Emperor Hirohito and the ascension of Emperor Akihito.
It ended on April 30, 2019, when Emperor Akihito became the first Japanese
emperor to abdicate in over 200 years. The following day, May 1, 2019,
marked the beginning of the current Reiwa era under Emperor Naruhito.
About the Heisei Era (平成時代)
The Heisei era spanned 31 years and witnessed extraordinary change in Japan.
It began amid Japan's economic bubble and saw the country navigate the
subsequent "Lost Decade" of economic stagnation in the 1990s. Major events
during Heisei include the Great Hanshin earthquake of Heisei 7 (1995),
the 2002 FIFA World Cup co-hosted with South Korea, and the devastating
Tohoku earthquake and tsunami of Heisei 23 (2011).
Many Japanese official documents, contracts, certificates, and records from
this period use the Heisei year format. If you are reading a document showing
a 平成 year, use the converter above to find the Western year instantly.
For Showa era dates (1926–1989), see the
Showa era converter.
For current Reiwa dates, use the
main era date converter.
Era date information sourced from the
Japan Cabinet Office.
Frequently Asked Questions — Heisei Era (平成)
-
How do I convert Heisei year to Western year?
To convert any Heisei year to a Western year, add 1988 to the Heisei
year number. For example, Heisei 1 + 1988 = 1989, Heisei 30 + 1988
= 2018, Heisei 31 + 1988 = 2019. The Heisei era ran from January 8,
1989 to April 30, 2019.
-
What years did the Heisei era cover?
The Heisei era (平成) ran from January 8, 1989 to April 30, 2019
— a span of 31 years. Heisei 1 corresponds to 1989 and Heisei 31
corresponds to 2019. Emperor Akihito reigned throughout the entire
Heisei period before abdicating on April 30, 2019.
-
What is Heisei 31 in Western year?
Heisei 31 is 2019 in the Western calendar. However, Heisei 31 lasted
only until April 30, 2019 — Emperor Akihito abdicated on that date.
The Reiwa era began the following day, May 1, 2019. So dates from
May 1, 2019 onward are Reiwa 1, not Heisei 31.
-
What is Heisei 1 in Western year?
Heisei 1 (平成元年) is 1989 in the Western calendar. The Heisei era
began on January 8, 1989, the day after Emperor Hirohito passed away.
Note that January 1–7, 1989 was still Showa 64 — Heisei 1 started
from January 8 only.
-
How many years did the Heisei era last?
The Heisei era lasted 31 years, from January 8, 1989 to April 30,
2019. It spanned the reign of Emperor Akihito and covered Japan's
economic bubble, the 1995 Hanshin earthquake, the 2011 Tohoku
earthquake and tsunami, and significant social and technological change.