Free BaZi Compatibility Calculator
See how two BaZi foundations relate through Day Masters, known Five Element balance, and cross-chart branch patterns. The calculator uses verified locations and never turns a relationship into a fabricated destiny score.
A cultural self-reflection tool—not a scientific predictor or a relationship decision service.
Fictional calculation example—not a customer case
This worked example uses fictional names and fixed test inputs. Its chart values come from the same calculation engine as the live tool.
Fictional person A
18 August 1994, 09:30 · Shanghai, China · Asia/Shanghai
Day Master: 丙 Fire
Fictional person B
20 June 1992 · birth time unknown · New York, United States · America/New_York
Day Master: 丁 Fire
Day Masters: Both Day Masters share an element. Priorities may feel familiar while similar blind spots can be amplified.
Conversation prompts: Where does support feel mutual, and where does it become expectation? Which difference needs a boundary rather than persuasion?
Confidence: At least one Hour Pillar is unknown; conclusions use only the provided data.
No interaction above determines whether two people should begin, continue, marry, reconcile, or end a relationship.
This evidence demonstrates repeatable software output. It does not establish scientific validity, practitioner endorsement, relationship outcomes, or product effectiveness.
How BaZi compatibility works
Animal-sign matching usually compares only the Year Branch. This calculator starts with two independently calculated foundations and considers the available pillars, Day Masters, Five Elements, and cross-chart branch relationships.
The Day Master describes the elemental reference point used throughout each chart. Day Branch and other known branches add relationship context, but no single pair can decide the outcome.
Generating and controlling relationships can describe support, structure, pressure, or unequal effort. Their meaning depends on communication, consent, roles, and the wider chart.
Birth time improves detail because it provides the Hour Pillar. If it is missing, the calculator continues with three pillars and never substitutes midnight or invents an Hour Pillar.
The prompts can support reflection between partners, friends, relatives, collaborators, or business partners. They are not a diagnostic or counseling service.
The tool explains its output. For a fuller teaching guide, read how a BaZi compatibility reading is constructed and review the calculation methodology.
Questions before you compare
It calculates two birth charts independently, then compares their Day Masters, known Five Element distributions, and standard branch combinations, clashes, and harms.
Yes. When a birth time is missing, the calculator uses a three-pillar chart and marks the Hour Pillar as unknown instead of inventing one.
The verified city supplies the historical time zone, daylight-saving context, longitude, and latitude used for time and true solar-time correction.
It uses more chart information than an animal-sign match, but it remains a cultural self-reflection tool rather than a scientific prediction of relationship outcomes.
No. A clash identifies a contrast or recurring pressure worth discussing; it does not predict failure, marriage, reconciliation, or separation.
A single percentage would hide uncertainty and turn complex chart patterns into a false verdict. The calculator shows evidence and conversation prompts instead.
Yes. The comparison can support reflection about communication, boundaries, collaboration, friendship, or partnership without assigning a romantic outcome.
The USD 199 product is one personalized 65-page report based on the purchaser's birth details, with relationship and communication as a chosen focus. It is not a paid two-person compatibility verdict.
Personalized Life Strategy Report
The free tool compares two calculated chart foundations. The USD 199 product is one personalized 65-page report based on the purchaser's birth details, with relationship and communication as a chosen focus. It is not a paid two-person compatibility verdict.
Automatically generated with calculation and consistency checks; not a live human consultation. No relationship outcome is guaranteed.