01
Your core dynamic
We explain whether the two core elements feel more similar, naturally flowing, or more likely to shape and challenge each other—without calling one pattern good or bad.
Two-chart relationship reading
BaZi Compatibility Calculator: Understand How Two Charts Interact
See where two BaZi charts appear to connect, where their styles may differ, and which relationship patterns traditional BaZi would pay attention to. The main result is written for normal people first; technical terms stay optional.
Plain-language relationship summaryCore dynamicRelationship areaNo love percentage
How to read your result
Start with the relationship story, not the BaZi vocabulary
The first part of your result explains the relationship in familiar language: where the charts seem to connect, where there may be differences to understand, and whether the relationship area itself shows a strong pattern.
Only after that do we show terms such as Six Harmony, Six Harm or Day Master. Those labels are useful for transparency, but they are not the part most people need to understand first.
02
Your relationship area
We look at the part of each chart traditionally associated with close partnership and explain whether it shows connection, a need for adjustment, or no dominant signal.
03
Other ways the charts interact
We summarize the remaining chart relationships as themes of connection, familiarity or areas that may need more understanding—not as points added or deducted.
04
Technical details if you want them
The exact stems, branches and traditional relationship names remain available in an expandable section for users who want to verify the calculation.
Keep this in perspective
The chart can suggest a pattern. It cannot tell you how your relationship will turn out.
Traditional terms such as harmony, clash, harm and control describe relationships inside the chart. They can sound stronger than they really are. A “harmony” is not a promise that two people will be happy together, and a “clash” is not a prediction of arguments, separation or divorce.
That is why BaZi Days does not turn these patterns into a love percentage. Instead, the result explains what may feel more connected, what may need more adjustment, and where there is simply no strong signal.
If a chart description does not match your real relationship, trust the real relationship. Communication, values, personality, family context, shared experience and the choices both people make matter much more than any traditional chart pattern.
For users who want to inspect the BaZi mechanics, the technical section still shows the exact stems, branches and pillar locations used in the reading.
Birth time and calculation precision
Why the same couple can get different charts on different websites
Before two charts can be compared, each chart has to be calculated. Sites can disagree because they use different timezone databases, true-solar-time policies, solar-term timestamps, late-Zi day-rollover conventions, or default birth times.
BaZi Days asks for a birth city so the chart engine can resolve historical timezone rules and longitude. If a reliable birth time is provided, true solar time can also be applied under the published convention. If the time is unknown, the Hour Pillar remains unavailable instead of being guessed.
The same calculation conventions used here are documented in the personal BaZi methodology and reused by the individual chart and Day Master tools.
Frequently asked questions
BaZi compatibility questions
What does a BaZi compatibility calculator compare?
BaZi Days looks at how the two core chart references relate, whether the relationship area shows a direct traditional connection, and whether other parts of the charts echo or challenge each other. The result explains what that may mean in everyday language first, with technical BaZi details available underneath.
Why does BaZi Days not show a compatibility score?
A percentage can look precise even when the traditional rules do not provide a defensible way to calculate relationship success. BaZi Days explains where the charts connect and where they may need more adjustment instead. A harmony is not a guarantee of an easy relationship, and a clash is not proof of a bad one.
Do both people need an exact birth time?
No. Exact birth time improves coverage by adding the Hour Pillar and enables true-solar-time correction. If a time is unknown, the tool compares the available three pillars and labels the reduced coverage instead of inventing an hour.
What is the Spouse Palace in this comparison?
Spouse Palace is a traditional name for the Day Branch, a chart position often examined when discussing close relationships. BaZi Days checks whether the two Day Branches have a direct traditional relationship, but does not turn that one pattern into a verdict about the couple.
If both charts have the same branch, is that self-punishment?
Not automatically. A repeated branch across two different people is shown as a same or repeated branch. BaZi Days does not label it self-punishment merely because both people carry the same branch.
Can this predict whether two people should marry?
No. The result can highlight traditional chart patterns that may be interesting to reflect on, but it cannot tell you whether a relationship will work or whether two people should marry. Real-life communication, values, personality, experience and choices matter much more.
Choosing a wedding date as well?
Chart comparison and date selection answer different questions. Use the wedding-date calculator when you want to screen a real ceremony window against both partners and the general marriage calendar.
Find personalized wedding dates