Saju and Chinese BaZi are built from the exact same eight characters — so are they the same thing? Almost. They share one chart and one set of Five Elements, but they are read in two different traditions. This guide explains where Korean saju and Chinese BaZi overlap, where they part ways, and how to get your own chart read in the Korean style in about a minute.
For the same birth, saju and BaZi produce the identical chart. The difference is not the math — it is the reading method. Korean saju emphasizes the Sip-sin (Ten Gods), a relational system that reads every element against your core self. Many Chinese BaZi schools center the useful god (용신, yong-sin) and the seasonal strength of your Day Master. Same chart, different lens.
Both systems descend from the same East Asian four-pillars tradition, so the foundations match exactly:
| Korean Saju (사주) | Chinese BaZi (八字) | |
|---|---|---|
| Name | Saju palja — "four pillars, eight letters" | BaZi — "eight characters" |
| Core method | Sip-sin / Ten Gods, read against the Day Master | Useful god (yong-sin) and Day Master strength |
| Typical focus | Temperament, relationships, career roles | Structure, balance, timing of luck cycles |
| Relationship reading | Strong, via the Ten Gods labels | Present, often through element interaction |
| Cultural framing | Korean naming, calendar habits, and idioms | Chinese classical texts and schools |
The clearest fingerprint of Korean saju is the Sip-sin (Ten Gods). Instead of only asking "is this element strong or weak," saju asks "what is this element to you." Each of the other characters is labeled by its relationship to your Day Master — for example resource, output, wealth, or authority. That relational layer is why saju reads so naturally for questions about personality, partnership, and the roles you play in work and family.
Many Chinese BaZi readers start by judging whether your Day Master is strong or weak in its season, then identify the useful god — the element that brings your chart into balance. This makes BaZi especially good at structural and timing questions: which elements help you, which strain you, and how the ten-year luck cycles shift the balance over time.
Neither tradition is "more correct" — they are two ways of reading one chart. If your questions are about who you are, how you relate, and the roles you carry, the Korean saju and its Ten Gods will feel natural. If you want a structural, balance-and-timing view, the BaZi useful-god approach shines. Because the eight characters are shared, you can read both views of the same chart and let them inform each other.
Saju (사주) is the Korean name, BaZi (八字) is the Chinese name, and both refer to the same eight-character chart. But "just a different word" undersells it — Korea developed its own reading emphasis, especially the Ten Gods method, so saju is a genuine tradition rather than a translation.
If both use the correct solar-term calendar and the same birth details, the eight characters will match. Differences in what they tell you come from the reading style, not the chart.
Saju and BaZi are four-pillars systems based on the solar-term calendar and Five Elements, while Western astrology is based on the zodiac and planets. If that comparison is what you are after, see Saju vs Western Astrology.
Right here. The free Cheonmyeongdang saju analysis takes your birth date and hour and returns your eight characters, Day Master, and Five Elements summary in English.