How does the Thai Buddhist Era relate to the Gregorian year?

The Buddhist Era (BE / พ.ศ.) is the Common Era (CE / ค.ศ.) plus 543. For example, 2026 CE is 2569 BE. Since 1941 the Thai solar calendar uses the same day and month as the Gregorian calendar, so only the year differs.

Is the conversion accurate?

Yes. For dates from 1941 onward the Thai solar calendar is identical to the Gregorian calendar except for the +543 year offset, so the conversion is exact and deterministic.

Is my date sent anywhere?

No. The converter is privacy-first — every calculation happens locally in your browser and no date ever leaves your device.

Thai Buddhist Date Converter (BE ⇄ CE)

Convert between Gregorian dates and the Thai Buddhist Era (พ.ศ.).

Thai Buddhist date converter

Convert between Gregorian (CE / ค.ศ.) dates and the Thai Buddhist Era (BE / พ.ศ.). The rule is a fixed year offset: Buddhist Era = Common Era + 543. The Thai solar calendar shares the same day and month as the Gregorian calendar (since 1941), so converting a date only changes the year.

It is privacy-first: all processing happens locally in your browser and nothing is ever sent anywhere.