BaZi Compatibility
Enter both civil birth dates to compare the actual chart pillars before interpreting relationship patterns. Birth times are optional.
What does this mean for you?
What BaZi compatibility compares
BaZi, also called Four Pillars, represents birth information through year, month, day and hour pillars. A compatibility reading places two symbolic charts beside each other. This tool shows the calculated pillars and checks the two day branches against the existing combination, clash and punishment rules. It does not convert a name, zodiac sign or birthday into a universal relationship percentage.
Enter the original civil birth details
Use Gregorian calendar dates. If you know a lunar birthday, confirm its Gregorian equivalent first. When a birth time is known, enter the local civil time recorded at the place of birth rather than converting it to your current city. This page calculates in your browser without uploading or saving either birthday. Changing either input clears the previous result so an earlier chart cannot be mistaken for a new calculation.
How the calculation works
The form reuses the existing Destin calendar engine and branch-relation rules. Year and month pillars follow traditional calendar and solar-term boundaries rather than simply changing on January 1 or the first day of each Gregorian month. The table displays both date-based charts; an hour pillar appears only when an actual birth time is entered. No matching percentage is generated.
If a birth time is unknown
You can start with the three date-based pillars. A reference hour is used internally for calendar arithmetic but is not presented as a real birth hour. Dates close to solar-term boundaries, midnight or historical time-zone changes require extra care. This page does not correct for birthplace, historical daylight saving or true solar time. Obtain reliable birth records before treating a boundary-sensitive result as complete.
Reading the day master and day branch
The day master is the heavenly stem in the day pillar. The day branch is its earthly branch, traditionally used as one relationship reference. Sharing a day master does not make two people identical, and different day masters do not make them incompatible. A branch pattern cannot establish someone’s loyalty, intentions, career or marriage date.
An example of a useful interpretation
If a sample pair shows a clash, turn it into a question about real life: do the two people make decisions at different speeds, need different amounts of space, or handle disagreement differently? A stable relationship does not become unhealthy because of a symbol. If a pair shows a combination, discuss what makes each person feel supported while still noticing actual boundary problems. These are examples of how to read a result, not promises about what your dates will produce.
Why one pattern is not a verdict
Traditional schools weigh seasonal context, the full chart and other conditions differently. This page makes the directly checkable calculation visible without claiming to reproduce every school. No detected day-branch pattern means only that these inputs do not match the rules checked here. It does not mean there is no connection, and a detected pattern does not prove the cause of a real disagreement.
Use the result alongside lived experience
BaZi is a traditional cultural and reflective framework. There is no scientific basis for using a birthday to guarantee a marriage outcome, identify a destined person or know another person’s actual feelings. Communication, consent, mutual respect and observable behavior remain more useful grounds for relationship decisions. You can explore a question with three tarot cards or continue with Mira; this page never automatically sends your birthdays to that conversation.
BaZi compatibility questions
What details do I need for BaZi compatibility?
Both Gregorian birth dates are required. Birth times are optional. Confirm any lunar-to-Gregorian conversion and use the original local civil time.
Can I compare charts without birth times?
Yes. The date-based pillars can be compared first. An unknown hour is not shown as a known hour pillar, and boundary-sensitive dates need further checking.
Will I receive a relationship percentage?
No. The tool displays calculated pillars and recognizable day-branch patterns rather than inventing a relationship score or predicting marriage outcomes.
Does a clash mean we should separate?
No. A traditional symbolic pattern cannot replace evidence from real life or serve as the sole basis for deciding whether to separate or marry.
Does correcting a birthday recalculate the result?
Yes. Editing either person clears the old result. The next comparison uses the current inputs rather than reusing the earlier birthday.
Are the birthdays uploaded or saved?
This page calculates in your browser without uploading or saving either birthday or updating a personal profile. You separately choose what to submit if you enter a conversation.