What is the Thai Buddhist Era?

The Thai Buddhist Era (BE) is based on the year of the Buddha's passing, calculated as 543 years before the Gregorian Common Era. So 2025 CE = 2568 BE. It is the official calendar system used in Thailand.

How do I convert CE to BE?

Simply add 543 to the Gregorian (CE) year. For example, 2025 CE + 543 = 2568 BE.

How do I convert BE to CE?

Subtract 543 from the Buddhist Era year. For example, 2568 BE − 543 = 2025 CE.

Does this tool handle BC years?

Years before 1 CE (i.e., 1 BC and earlier) map to BE years of 542 and below. The tool handles any positive integer year in either direction.

Is the Thai Buddhist calendar the same as the Gregorian calendar otherwise?

For year numbering, yes — the Thai solar calendar follows the same months, days, and leap year rules as the Gregorian calendar; only the year number differs by 543.

Why is the offset exactly 543?

According to the Theravada Buddhist tradition used in Thailand, the Buddha attained parinirvana (final passing) in 543 BCE. The Thai calendar counts from that year as year 1 BE.

Thai Buddhist Year Converter

Name: Thai Buddhist Year Converter
Availability: InStock
Author: Nham Vu

Convert any Gregorian (CE) year to Thai Buddhist Era (BE) and back instantly — BE = CE + 543.

Convert Year

Enter a year below. Result updates instantly.

Gregorian Year (CE)

Quick picks (CE):

Buddhist Era (BE)

2568

2025 CE + 543 = 2568 BE

Common Year Reference

Gregorian (CE)	Buddhist Era (BE)	Notable

Copied!

Summary

Convert any Gregorian (CE) year to Thai Buddhist Era (BE) and back instantly — BE = CE + 543.

How it works

Choose a conversion direction: Gregorian (CE) to Buddhist Era (BE), or BE to CE.
Enter the year you want to convert in the input field.
The converted year appears instantly — no button press needed.
Use the swap button to reverse the conversion direction.
Copy the result with the Copy button for use elsewhere.

Use cases

Convert a Thai document date from BE to a Gregorian year for international correspondence.
Find out what Thai Buddhist year a historical event falls in.
Check what CE year a Thai ID card or birth certificate year corresponds to.
Confirm the correct BE year for legal contracts or official Thai government forms.
Convert Thai calendar years for academic or genealogy research.
Quickly verify BE/CE offsets when working with Thai financial records.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu