Free BaZi compatibility calculator

Compare two Four Pillars charts with each person's local birth time

Enter each person separately. Both cities' historical time zones and daylight-saving rules are checked before the relationship result opens in the same visual language as Hongsimdang's Korean compatibility reports.

Hongsimdang paper artwork of gold constellations above burgundy and gold terrain

Person 1

Birth details

Enter the local date and time shown on the birth record. We apply the city's historical time zone and daylight saving rules.

Free · no account required · birth details are not saved0 / 5 complete

Next: choose a country

Location data: Countries States Cities Database (ODbL 1.0).

Date of birth

Month / Day / Year

If clocks changed at that time, we will ask which occurrence matches the birth record.

Person 2

Birth details

Enter the local date and time shown on the birth record. We apply the city's historical time zone and daylight saving rules.

Free · no account required · birth details are not saved0 / 5 complete

Next: choose a country

Location data: Countries States Cities Database (ODbL 1.0).

Date of birth

Month / Day / Year

If clocks changed at that time, we will ask which occurrence matches the birth record.

Each person chooses their own birthplace and recorded local time. Historical time-zone and daylight-saving rules are checked separately. Dates must use the Gregorian calendar.

How to use the comparison

What can two BaZi charts help you compare?

Compatibility is more useful as a conversation map than a score. The comparison shows where two patterns support each other and where clearer agreements may be needed.

01

Attraction and attention

See which differences create interest and which ones make each person wait, chase or pull back in messages and dating.

02

Everyday stability

Compare pace, practical expectations and the way each person handles money, plans and shared responsibilities.

03

Repair after conflict

Use the chart to name what each person needs after an argument—space, reassurance, facts or a concrete next step.

04

Long-term rhythm

Look for patterns that may need negotiation over time rather than using one mismatch as a reason to decide the relationship’s future.

Why Hongsimdang compares three systems

BaZi describes the overall structure and longer cycle. Zi Wei Dou Shu narrows the life area. Western astrology adds planetary tension and timing. When several views point to the same pattern, we translate it into practical language about messages, meetings, dating, money and choices.

The result reuses Hongsimdang's relationship profile cards, axis chart, and result navigation. It compares attraction, everyday stability, repair after conflict, long-term rhythm, and sensitive tension without declaring a relationship good or bad.