Pillar-by-pillar comparison, favorable seasons, and remedy pairings for both partners.
Almost every popular "Chinese compatibility" chart compares two year animals: Rat with Ox, Tiger with Horse. That is the folk version. Traditional 合婚 works on the full charts, and it asks five separate questions. Here is what each one means and how to read the score.
The interesting pattern is not similarity but complementarity. A chart heavy in Fire and thin in Water pairs well with a water-rich one, because each supplies what the other lacks.
Comparing the two Day Masters through the Ten Gods describes the quality of the relationship — nurturing, expressive, what you build together, duty, or peer rivalry.
The Earthly Branches form fixed combinations, clashes and harms. The check watches the day branches — the marriage seats — plus the year and month branches that represent households.
Each chart runs through ten-year luck cycles. The tool compares the two rhythms: charts that peak together share momentum, charts that alternate mean one carries while the other regenerates.
The year animal is derived from a single Earthly Branch — one of the eight characters in a BaZi chart. It describes the era you were born into and the household you grew up in. It says very little about how you conduct a relationship.
The branch that governs partnership is the Day Branch 日支, the second character of the day pillar. This is the seat closest to you in the chart, and it is the classical indicator of marriage and close companionship. Two people can share a year animal and have incompatible day branches; two people with supposedly "clashing" animals can have day branches that fit together cleanly. Comparing only the year animal throws away seven eighths of the information.
It is worth being precise about clashes: a clash is not a prediction of failure. In the classical readings a clash between day branches often appears in long, active, high-change marriages. It signals tension that has to be worked with, not a verdict.
It cannot tell you whether to stay or leave. That is a decision, not a calculation.
It cannot see your actual behaviour — only the temperament structure each chart carries. It does not account for how long you have been together, how you handle conflict, or what you have consciously built.
Chart analysis describes starting conditions. A relationship is what two people do with them. Where 合婚 comes from: the classical form compared the couple's eight characters, the year branches of their families, and the proposed wedding date, and was performed before a betrothal was agreed. What this tool does is the computational core of that practice, without the rituals we cannot reproduce or verify.
Birth date is required for both. Birth hour sharpens the Hour Pillar and the day-branch reading. If your partner's time is unknown, the tool still runs on the three known pillars and flags reduced confidence.
No, and we will not present it that way. The classical tradition itself treats compatibility as one factor among many. Use the named dimensions as conversation topics, not as a gate.
The year animal is one branch out of eight characters. Run the full comparison — the day branch is the one that matters for partnership, and it often tells a different story.
The same five dimensions apply, though the emphasis shifts. For business, weigh Da Yun rhythm and Day Master relation more heavily; for friendship, the communication dimension matters most.
Because the chart is deterministic. Given the same birth moments, the calculation returns the same answer every time. Any tool returning different readings for the same input is generating text, not computing charts.
No. Everything is computed in your browser and kept in local storage on your own device. Nothing is transmitted to us. See our privacy policy.