SAJU is a free, AI-powered reading of your Korean Saju (사주) — also known as Bazi (八字), the East Asian Four Pillars of Destiny system. We exist for one simple reason: most online Bazi tools are either calculator-only (no interpretation) or buried in fortune-telling vocabulary that obscures what is actually a careful, almost actuarial system of reading energetic balance.
We wanted something different — a reading that takes the calculation seriously, translates the vocabulary honestly, and leaves the meaning-making to you.
SAJU is not a fortune-telling service. We do not predict events. We do not tell you who to marry, when to have children, or whether your business will succeed. The Saju tradition itself, properly understood, is a language of energetic tendency — not a script of inevitable events. Modern Korean and Chinese practitioners are explicit on this point, and we follow their lead.
We are also not a substitute for professional advice on health, finance, mental health, or major life decisions. Saju is one input among many, and it is most useful as a reflective practice — a vocabulary for self-understanding — rather than as a decision-making oracle.
The Bazi system is shared across Korea, China, and Japan, and the calculations are identical. We use the Korean name "Saju" for two reasons. First, this site has Korean roots — our analysis engine was originally built for the Korean market. Second, "Saju" carries some of the cultural texture of Korean readings specifically: a slight emphasis on tendency over destiny, on the practical over the mystical, on a reading as a conversation with yourself rather than as a verdict from above. We think that texture is worth preserving in the English version.
If you've encountered the system before as Bazi (the Mandarin name), everything we say also applies to you. The vocabulary differs but the tradition is the same.
SAJU is built and maintained by a single developer in Korea who has been studying Saju Myeongri for several years. The technical stack is intentionally simple — a static site with serverless API endpoints — and the codebase is small enough to be inspected and verified by anyone curious enough to look. We believe that for a tool that asks people for their birth data, simplicity and inspectability are forms of trust.
If you find a calculation error, a translation that strikes you as misleading, or a UX moment that frustrated you — we want to know. Email ytyt8730@gmail.com with as much detail as you can. We read every message.
If you'd like to start with your own reading, it takes about 30 seconds: begin here →