About this tool
If you search for Korean Saju online, you will often see the words Four Pillars of Destiny and BaZi next to it, and it is natural to wonder whether they are the same thing.
This guide gives a clear, practical answer.
Both Korean Saju and Chinese BaZi come from the same East Asian system: a person is described by four pillars, one each for the birth year, month, day and hour, and every pillar has a Heavenly Stem and an Earthly Branch, eight characters in all, tied to the Five Elements of Wood, Fire, Earth, Metal and Water.
Saju is the Korean pronunciation of the four pillars and BaZi is the Mandarin word for the eight characters. Where they differ is mostly in the interpretation traditions, the terms people use and the culture around them.
We explain the shared calculation, the differences in plain language, how Saju has become a social activity in Korea, from saju cafes to chats with friends, what to do when you do not know your birth time, and answer five common questions.
Everything here is general background knowledge, offered for fun and cultural curiosity. Birth dates you enter in our Saju tools are never stored or sent to a server.
ⓘ Saju and BaZi are entertainment and self-reflection, not scientific predictions, and they do not replace professional advice.
How to use
- Read the first sections to see what Saju and BaZi have in common.
- Check the differences and the Saju cafe section to understand the culture.
- Try the free Saju calculator or the Saju Element quiz, and use 'Time unknown' if you do not know your birth time.