Gunghap · 궁합

Saju compatibility, the Korean way: gunghap

How two saju charts meet, in plain English. Start free with both Day Masters; the Couples Report reads both charts across saju, Zi Wei and Western astrology.

Free · two birthdays

Try it free: your two Day Masters

Two birth dates, two Day Masters, one line about how their elements meet. Not a number, not a verdict. Calculated in your browser; nothing is stored or sent.

Person 1
Person 2

What is gunghap?

Gunghap (궁합) compares two people's saju charts. In Korea some families take it lightly and some take it seriously before a wedding. It asks less "are you the same sign?" and more "what does each of you bring the other?"

For a lot of couples it comes up the way a horoscope app does here: half a joke, half curious, one of you reading the result out loud. For others it's part of meeting the family. Either way, the useful part is the same. It gives two people a shared vocabulary for how they are different.

How to read your free result

Any two Day Masters are linked in one of three ways, and the line under your result names which one.

LinkExampleWhat it tends to look like
Same elementWood and WoodYou recognize each other's habits quickly. The conversation is about who leads when you both want the same thing.
One feeds the otherWater and WoodOne of you tends to supply what the other grows on: encouragement, calm, ideas, a place to land. It often runs the other way in small things.
One shapes the otherMetal and WoodOne of you tends to give the other edges and direction. It can feel like friction, and it is often where the most growth happens.

None of the three is the good one. Couples in every row argue about the dishes and plan trips together; the link only describes the flavor of how your two elements meet. Yin and yang matter too: two Yang Fires and a Yang Fire with a Yin Fire share an element, and they still feel different in a room.

Read a pairing

Longer notes on some Day Master pairs, one page each. More are on the way.

What gunghap actually looks at

A gunghap reading layers several comparisons, from the simplest to the most detailed.

  1. The two Day Masters. Each Day Master has an element, and the elements relate in two cycles. One feeds the next: wood → fire → earth → metal → water → wood. One shapes another: wood → earth → water → fire → metal → wood. The free check above shows which of these links your two Day Masters.
  2. The animals (earthly branches). Some pairs of branches combine (합, hap) and some clash (충, chung). A combination tends to read as easy cooperation, a clash as two people pulling in different directions.
  3. The day pillars. The day pillar is the closest thing saju has to "you at home." Comparing the two day pillars, stem and branch together, says a lot about everyday life side by side.
  4. Element balance. Each chart leans on some elements and runs short on others. Gunghap looks at whether one person's surplus fills the other's gap.

Fire + Water isn't automatically a problem. It depends on the rest of both charts. That's why the free check gives you one line and not a verdict.

Beyond saju: Zi Wei and synastry

Zi Wei looks at each person's spouse palace; Western synastry looks at aspects between two charts. The Couples Report reads all three and marks where they agree.

When three traditions point at the same thing, say, that one of you sets the pace and the other keeps you both steady, it's worth paying attention to. When they disagree, the report says so instead of smoothing it over.

What's in the Couples Report

Web report + PDF, by email. $29, or +$15 with Your Ultimate Chart ($34 together).

Order the Couples Report Both reports, $34

For reflection and entertainment. Charts calculated by the In-Yun engine. Report text drafted with AI.

What it doesn't tell you

Gunghap isn't a pass or a fail, and we don't turn it into a number. It can't say whether you should stay together, move in, or get married; that's for the two of you. What it does well is give you words for patterns you may already half-notice: who recharges alone, who needs to talk it out tonight, who plans the trip and who finds the restaurant once you're there.

Reading someone else's chart

Only enter someone's details if you have their permission, or you'll use the report only for your own reflection. For the other person we ask only a name (a nickname is fine), birth date, birth time (optional) and birth city.

The free check on this page asks even less: two dates, and a nickname if you like. It runs in your browser, and when you close the tab it's gone.

Start with one Day Master

Curious about your own first? Find your Day Master with the free calculator, or read about each one: Yang Wood, Yin Wood, Yang Fire, Yin Fire, Yang Earth, Yin Earth, Yang Metal, Yin Metal, Yang Water, Yin Water.

Questions

Is saju compatibility the same as Chinese zodiac compatibility?

No. Zodiac-animal charts compare one character each, your birth-year animal. Gunghap compares the full charts, starting with the Day Masters.

We have a "clash." Is that bad?

It marks friction worth talking about, not a verdict. The report shows it next to where you click.

Do we need birth times?

No. Without times you get three of four pillars each and Western synastry without houses, and Zi Wei needs an exact time. The report says what it left out.

Does it work for same-sex couples?

Yes. The order form asks each person's pronouns separately, and which traditional chart convention saju should use for each of you, and the report uses the pronouns you give.

Is this a prediction?

No. It describes patterns as each tradition reads them. It doesn't tell you what's going to happen and isn't relationship advice.

Saju or BaZi?

Saju shares its roots with Chinese BaZi. This is how it's read and talked about in Korea.