Four pillars (八字) from your birth date, time, and place. Computed deterministically with true solar time correction, the way a careful practitioner would, never guessed by an AI. Free, no sign-up, and nothing you enter leaves this page.
The chart is the map. The conversation is the territory. In the app, this chart opens a contemplative reading you can question, one thread at a time, plus a daily lot and couple compatibility.
Get the appMost online BaZi tools, and nearly all AI chatbots, get charts subtly wrong: the month pillar flips at solar-term boundaries, and general-purpose AI models miscalculate it at a startling rate. This calculator uses a deterministic astronomical engine (solar terms to the minute, true solar time from your birthplace's longitude), the same engine inside the Reckoned Yet? app. The math is never left to a language model.
Your birth details are processed entirely in your browser. They are not sent to a server, not stored, and not logged.