BaZi Compatibility Calculator
Five Element Chart Comparison · Instant Analysis
Enter two birth dates to see how the charts interact — Day Master pairing, elemental compatibility, and what the dynamic means in real terms.
What Is BaZi Compatibility?
BaZi compatibility compares two people's Four Pillars charts to understand how their elemental energies interact. Unlike Western sun-sign compatibility, BaZi examines the complete chart — all eight characters across four pillars — to identify where two people naturally support each other, where they create productive tension, and what each person must understand to make the relationship thrive.
The most important pillar for romantic compatibility is the Day Pillar — specifically the Day Branch, called the Spouse Palace. When two people's Day Branches combine (六合), there is a natural pull. When they clash (六冲), there is intensity, transformation, and growth through friction.
How to Read Your Compatibility Results
One person's dominant element produces the other's — natural support, complementary energy. The relationship often feels easy from the start, though dependency can form over time.
Both charts share the same dominant element — deep mutual understanding and shared blind spots. The relationship amplifies both strengths and weaknesses simultaneously.
One element controls the other in the Five Element cycle — creating productive friction. These relationships drive growth and transformation but require conscious navigation to avoid power struggles.
Elements operate in parallel without strong generating or controlling interaction. The relationship grows through deliberate effort and shared goals rather than intrinsic elemental pull.
The 5 Factors That Determine BaZi Compatibility
1. Day Branch Interaction
The Spouse Palace (Day Branch) combination or clash is the single most important compatibility indicator. Combinations create natural ease; clashes create intensity and transformation.
2. Day Master Elemental Relationship
How the two core selves (Day Masters) relate in the Five Element cycle — whether one generates, controls, or resonates with the other — shapes the fundamental dynamic of the relationship.
3. Five Element Balance
Charts that complement each other's elemental deficiencies create a sense of completion. Two charts heavy in the same element understand each other but may compound shared weaknesses.
4. Spouse Star Expression
Each Day Master has a specific elemental energy it is wired to attract. A chart that carries its own Spouse Star strongly will draw that energy powerfully — in its healthy or shadow form.
5. Luck Pillar Timing
The same chart combination can feel harmonious or strained depending on what decade each person is in. A challenging pairing during mutually supportive luck cycles is very different from the same pairing during conflicting ones.
Frequently Asked Questions
How does the BaZi compatibility calculator work?
The calculator converts each person's birth date into a Five Element profile from their Four Pillars chart, then compares the dominant elements to determine whether they generate, control, or resonate with each other — producing a compatibility score and dynamic description.
Do I need birth times for BaZi compatibility?
Birth times improve accuracy by completing the Hour Pillar, but the analysis runs without them. The most important pillars for compatibility are the Day Pillars, which only need birth date.
What does a high compatibility score mean?
A higher score indicates naturally supporting or resonating elemental profiles. But no score predicts whether a relationship will succeed — it describes the energetic quality of the interaction. Many great relationships carry "difficult" chart dynamics.
Can I use this for business partnership compatibility?
Yes. BaZi compatibility applies to any close relationship. For business, the focus shifts to whether the two Day Masters are in a productive or controlling relationship, and whether both charts activate wealth stars together.
What is a BaZi Day Branch clash?
A Day Branch clash occurs when two people's Spouse Palaces (Day Branches) are in direct opposition — for example, Rat and Horse, or Rabbit and Rooster. Clashes produce intensity and transformation, not failure. Many lasting relationships carry a Day Branch clash.
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