Convert Reiwa Era (令和) (R) to Western Year (CE) (CE)
Reiwa (令和) is Japan’s current era, which began on 1 May 2019. To convert a Reiwa year to the Western calendar, add 2018: Reiwa 6 is 2024, Reiwa 8 is 2026.
Formula
1 R = 2019 CE
To convert R to CE, Reiwa Era (令和) to Western Year (CE).
Conversion Table
| Reiwa Era (令和) (R) | Western Year (CE) (CE) |
|---|---|
| 1 R | 2019 CE |
| 2 R | 2020 CE |
| 3 R | 2021 CE |
| 4 R | 2022 CE |
| 5 R | 2023 CE |
| 6 R | 2024 CE |
| 7 R | 2025 CE |
| 8 R | 2026 CE |
| 9 R | 2027 CE |
| 10 R | 2028 CE |
| 15 R | 2033 CE |
| 20 R | 2038 CE |
| 25 R | 2043 CE |
| 30 R | 2048 CE |
| 31 R | 2049 CE |
| 40 R | 2058 CE |
| 50 R | 2068 CE |
| 64 R | 2082 CE |
| 100 R | 2118 CE |
| 115 R | 2133 CE |
Common R to CE Examples
- 1 R = 2019 CE
- 2 R = 2020 CE
- 3 R = 2021 CE
- 5 R = 2023 CE
- 6 R = 2024 CE
- 7 R = 2025 CE
- 8 R = 2026 CE
- 10 R = 2028 CE
About R to CE
Japanese official documents — driver’s licences, certificates, bank forms — date years by era (gengō) rather than the Western calendar. The rule for the current era is simple: Western year = Reiwa year + 2018. Reiwa 1 (2019) is special: it only ran from 1 May, because January–April 2019 still belonged to Heisei 31.
On forms the era is often abbreviated to a single letter: R6 means Reiwa 6, i.e. 2024. Earlier eras work the same way with different offsets — Heisei N = N + 1988, Shōwa N = N + 1925.
Frequently Asked Questions
What year is Reiwa 6 in the Western calendar?
2024. Add 2018 to the Reiwa year.
Why do Reiwa 1 and Heisei 31 refer to the same year?
The era changed on 1 May 2019 when Emperor Naruhito acceded: January–April 2019 was Heisei 31, and the rest of the year was Reiwa 1 (gannen, the first year).
Is there a shortcut for converting R to CE?
The shortest route is the formula itself: 1 R = 2019 CE. Memorizing this single line covers every case.
Can I convert large numbers of R to CE at once?
Yes. The same ratio 2019 applies to any value, whether it is a fraction or millions of R.
What should I check before trusting a R to CE result?
Confirm the input value, the unit direction (R to CE, not the reverse), and that the formula 1 R = 2019 CE has been applied.
How do R and CE compare in size?
Compare them through the ratio: 1 R equals 2019 CE, which shows directly which unit represents a larger amount of Calendar Years.
What is a quick way to estimate R to CE?
Round 2019 to one or two significant digits and multiply mentally. Use the exact factor when accuracy matters.
Why is the conversion factor between R and CE 2019?
It comes from the official definitions of both Calendar Years units, which are anchored to internationally agreed reference standards.