Compatibility
Put two charts side by side and see where they mesh and where they grind.
First person
The sun sits differently depending on where you were born, which changes the hour pillar.
Second person
The sun sits differently depending on where you were born, which changes the hour pillar.
What Saju compatibility is
Compatibility places two people’s charts side by side to see which positions lock together and which push against each other. It looks especially at the day branch (the partner seat), the year branch (the zodiac sign) and the month branch, along with whether each person’s five elements make up for what the other is missing.
What goes into the score
This birth chart compatibility tool works out the harmonies and clashes between the day, year and month branches, the balance of the five elements, and the relationship between the two Day Masters, item by item. Rather than showing only a number, it lays out in a table where each point came from, so you can see for yourself why the result turned out that way.
Frequently asked questions
How does the compatibility reading work?
Enter each person’s birth date and time and the two charts are calculated separately, then compared for their day, year and month branch relationships and how their five elements balance out.
Is just the birth date enough?
Yes. It works with the year, month and day even without the time. Since the day branch matters a lot for partner compatibility, though, knowing the time makes the reading more detailed.
Does a low score mean we don’t match?
The score is only for reference. It’s better to look at the table to see which positions clash and treat them as things to be mindful of with each other.
Is it free? Is it safe?
It’s completely free with no sign-in. Both people’s birth dates are never sent to a server — they are calculated only inside your browser.
Fortune telling is for fun. What you see here is a calculation from traditional calendar rules and card symbolism — it does not tell you what will actually happen. For decisions about health, legal matters or money, please talk to a qualified professional.