Data Saju › Compatibility
Free Korean Saju Compatibility (Gunghap) in English
Compare two charts — or a whole family, friend group or team of up to eight. Instead of one score, every report shows attraction, stability, complement and tension, with the evidence behind each.
Couple Report
What kind of couple are we?
Spouse Report
What kind of married couple are we?
Reunion Report
Is there a way back to my ex?
Child Report
What kind of child is mine?
Friendship Report
What kind of friends are we?
Work Report
How do we work together?
Whole-Family Report
How is our family connected?
New to this? Read how saju compatibility works.
Saju compatibility is more than matching zodiac signs
Zodiac matching compares one character from each person: the animal of the birth year. Korean compatibility (宮合, gunghap) compares both whole charts — eight characters each — and looks closest at the day pillar, the seat of you and your partner. It asks how your Day Masters meet, whether your day branches combine or clash, whether each chart carries the element the other needs, and how your luck cycles line up in the years ahead.
Four dimensions instead of one score
- Attraction: stem combinations, Six and Three Harmonies between your branches, Peach Blossom and the partner star — what draws you together.
- Stability: whether your charts support each other's useful element, so time together feels easy.
- Complement: one chart supplying what the other lacks, such as Water for a Fire-heavy chart.
- Tension: clashes, punishments and Wonjin between your branches — where you collide, and the habits that ease it.
Each relationship weighs these differently: the day branch matters most for couples and spouses, the month branch for colleagues, and the parent's and child's own charts for a parent-and-child reading. Every report shows the exact characters behind each answer, and a "How we calculated this" note under every answer.
FAQ
Do I need both birth times? No. Without a birth time a chart has three pillars instead of four; the reports still work and say which answers would change with the time.
What if I don't know their birthday? Send an invite link from your reading. It carries only the eight characters of your chart, not your birth date, and they add their own birthday to open the same report.
Is a "clash" bad news? No. A clash marks where your pace and habits differ. Many close couples have one; the reports explain how to use it rather than avoid each other.
Is anything stored? No. Charts are calculated in your browser and birth dates are not saved or sent to our servers.