Gregorian to Thai Buddhist Era date converter
Thai dates are written with the Buddhist Era year; this tool gives the Buddhist Era date for any Gregorian day since 1941.
Loading the tool…
Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Enter gregorian date.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
Thai Buddhist Era year = Gregorian year + 543; the day and month stay the same because Thailand uses Gregorian months and has started the year on 1 January since 1941.
Example
Inputs: Gregorian date = 2026-10-01. Result: Converted date: 1 October 2569 BE; Buddhist Era year: 2,569; Day: 1.
Limits and caveats
- The range starts on 1 January 1941, because the Thai year began on 1 April before then.
- Sri Lanka, Myanmar and Cambodia use a different count, so their year can be one higher.
Questions about this tool
Why add 543 years?
Thailand counts years from the passing of the Buddha, dated to 543 BCE, so 2026 CE is 2569 BE.
Are the months different in the Thai calendar?
They are the Gregorian months with Thai names, so the day and month stay the same.
What is the Buddhist Era year in 2027?
2570, from 1 January 2027 to 31 December 2027.