Calendar Years Converter — 8 Units, Free & Instant
Convert between Calendar Years units. Choose from 8 different units including Western Year (CE), Reiwa Era (令和), Heisei Era (平成).
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| From | Western Year (CE) (CE) |
|---|---|
| Western Year (CE) (CE) | — |
| Reiwa Era (令和) (R) | — |
| Heisei Era (平成) (H) | — |
| Shōwa Era (昭和) (S) | — |
| Taishō Era (大正) (T) | — |
| Meiji Era (明治) (M) | — |
| Buddhist Year (BE) (BE) | — |
| ROC Year (民國) (ROC) | — |
Japanese eras, Buddhist and ROC years
Not every country counts years from the same starting point. Japan dates official documents by imperial era — Reiwa (令和) began in 2019, so Reiwa 6 is 2024. Thailand uses the Buddhist Era (BE), 543 years ahead of the Western calendar: 2026 is BE 2569. Taiwan counts from the founding of the Republic of China in 1912, making 2026 the ROC (Minguo) year 115.
How the conversions work
Each system is a fixed offset from the Western (Gregorian) year: add 2018 to a Reiwa year, 1988 to Heisei, 1925 to Shōwa; subtract 543 from a Buddhist year; add 1911 to a Minguo year. The only subtlety is era boundaries — 2019 was Heisei 31 until 30 April and Reiwa 1 from 1 May, and 1989 switched from Shōwa 64 to Heisei 1 on 8 January.