BaZi Compatibility for Any Two People

BaZi, also called the Four Pillars of Destiny, turns a birth moment into eight characters: a heavenly stem and an earthly branch for each of the year, month, day and hour. The stem of the day pillar is your Day Master, the character that stands for you. The branch underneath it is traditionally called the spouse palace, the seat of your closest partnership. On this page we call it the partner palace, because it describes how you live closest to another person, whatever shape that closeness takes.

BaZi compatibility puts two of these charts next to each other and reads the links between them the same way a reader reads the links inside a single chart. Elements feed or control each other, stems combine or clash, and branches harmonize, clash, punish or harm. The result isn't one number. It's a portrait of a pair: where you're naturally drawn together, where everyday life gets bumpy, who supplies what, and how steady the ground is over time.

That's also why it's more useful than a pass or a fail. Two charts with plenty of clashes can make a lively, loyal pair once both people understand the friction, and two charts that combine beautifully still need looking after. Chinese birth chart compatibility describes the terrain; the two of you decide how to cross it.

The form asks for the same details for both people: a birth date, solar or lunar; a birth time, or a tick if you don't know it; sex; and a birthplace, which sets the time zone and longitude, with true solar time as an option. Sex is only a calculation setting. It sets the direction of each person's luck pillars and the classical partner-star convention, and nothing else. Then you choose how you're connected (partner, someone you like, an ex, friend, colleague or business partner, or family) and, if you like, give the other person a nickname so the result reads naturally.

The free result needs no sign-up and stores nothing. It puts both day pillars side by side and shows four dimensions as levels, from very strong to needs real care, never as numbers. It tells you whether your day pillars form one of two classic patterns, heaven and earth combining or heaven and earth clashing, and it picks out the months of the coming year that run well for both of you, plus the stretch when it's wiser to go gently with each other. Here's what each part means:

The first thing a reader compares is the two Day Masters. Five pairs of stems combine, a classical image of natural attraction, almost a promise: Jia with Ji, Yi with Geng, Bing with Xin, Ding with Ren, and Wu with Gui. A combination doesn't mean two people melt into one, but it does describe a pull that's easy to feel and just as easy to take for granted. Four other pairs clash: Jia with Geng, Yi with Xin, Bing with Ren, and Ding with Gui. Each is two stems of the same polarity, one controlling the other, two strong wills face to face, and they often bring spark and argument in the same breath.

Every other pair is read through the five-element cycles. If one Day Master's element produces the other's, as wood feeds fire or water feeds wood, the relationship tends to have a giver and a receiver. If you share an element, you're mirrors: quick to understand each other and sometimes competing for the same space. If one element controls the other, as metal cuts wood or fire melts metal, there's structure and pressure in the mix, which can be exactly what a chart needs or exactly what it finds tiring.

The calculator also names the Ten God each of you is in the other's chart, because a relationship rarely looks the same from both sides. If you're a Jia Wood Day Master and the other person is Ji Earth, they're your Direct Wealth, someone you look after and build something tangible with, while you're their Direct Officer, the steadying structure in their life. If they're Geng Metal instead, they're your Seven Killings, the one who pushes you, challenges you and makes you sharper. And here are the five stem combinations, in pictures:

The second big comparison is between the two day branches, the partner palaces. This is where each chart keeps its most private self, so the way the two palaces meet carries a lot of weight in how ordinary days together feel. A six harmony between them tends to feel like being at home with each other. A clash feels like movement: two people who bring change into each other's lives, who argue and make up, and who rarely get bored.

Punishments and harms are subtler, more pebble in the shoe than storm, and they tend to show up as the same small misunderstanding coming round again. None of these decides anything on its own, and the same pair of branches matters more or less depending on what else each chart holds.

Your year branches, the zodiac animals, are compared the same way, but they weigh less, because the year pillar describes background and family more than private life. Plenty of Chinese astrology compatibility by birth date stops at the animals; here they're one factor among many. The calculator also checks the month and hour branches across both charts, giving the most weight to links that touch a partner palace and the least to links between the two hour pillars. For reference, these are the classic branch relationships:

Every chart leans one way or another. A Day Master born in its own season with plenty of support runs strong, and usually benefits from elements that give its energy somewhere to go; one born out of season and short of support runs weak, and benefits from elements that feed it. Climate counts too: a chart born in deep winter wants warmth, and a midsummer chart wants moisture. The elements a chart benefits from are its useful, or favorable, elements, and the ones that tip it further off balance are its draining ones.

In BaZi compatibility this becomes a very practical question: is the other person's chart rich in what yours needs? The calculator weighs the five elements across the whole of the other chart against your useful elements, does the same in the other direction, and checks whether each Day Master's own element is one the other chart wants or one it finds draining. When the answer is good both ways, the support level is high, and it tends to feel as if the other person makes you more yourself. When one chart is heavy in what the other finds draining, time together can feel tiring in a way neither of you can quite name, even when you like each other a lot.

Take a Bing Fire Day Master born in deep winter, a sun on a cold day, who usually needs fire and wood. A partner whose chart is full of wood and fire brings warmth and encouragement just by being around. If that partner's chart is mostly water and metal instead, Bing may feel cooled and slowed in their company. That isn't anyone's fault, and it's very workable once you can see it: Bing simply needs some of that warmth from elsewhere too, from friends, from work and from the way the two of you spend your time.

For romantic ties, meaning a partner, someone you like or an ex, the calculator also checks a classical convention called the partner star. In a chart recorded as male, the Wealth stars, the element the Day Master controls, traditionally stand for a partner. In a chart recorded as female, it's the Officer stars, the element that controls the Day Master: Direct Officer and Seven Killings, the stars of authority and pressure. The calculator asks whether the other person's Day Master element is your partner star, and whether yours is theirs.

When it matches, people often say the other person felt like their type before they could explain why. When it doesn't, nothing is missing. Plenty of close partnerships run on other stars: on care and support, on shared projects and talent, or on the easy companionship of two people who are alike. The partner star is one more layer, not a requirement.

Same-sex couples are welcome. Sex in the form is a calculation setting: it decides the luck pillar direction and which version of the classical convention applies, and it changes nothing else in either chart. Many modern readers look at the Wealth and Officer stars together regardless of gender and give at least as much weight to the partner palaces. For friends, colleagues and family, the partner-star check is simply left out.

Two day-pillar patterns get special mention. When the Day Masters combine and the partner palaces form a six harmony, as with a Jia Zi day and a Ji Chou day, it's called heaven and earth combining (tian he di he): stems and branches both reach for each other. When the Day Masters clash and the partner palaces clash too, as with Jia Zi and Geng Wu, it's heaven and earth clashing (tian ke di chong): the two pillars face each other head on.

Heaven and earth combining sounds like a jackpot, and it's a lovely thing to share, but it needs care to keep. A pair this easy can stop talking about hard things because nothing seems to need saying, and two people who combine strongly can blur into each other until one of them wants their edges back. Keep your own friends, keep saying what you want out loud, and the ease lasts.

Heaven and earth clashing is friction, not a sentence. It usually means two direct characters who move each other: lots of energy, lots of change, and arguments that flare fast and fade fast. The way through is structure. Agree on who decides what, pause a heated conversation and set a time to come back to it, and treat the difference as a skill set, since the person who clashes with you sees exactly what you miss.

Timing is the last piece. The calculator runs both charts through the twelve months of the coming year and marks the stretches that run well for you both, good for plans, trips, big conversations and decisions you want to make together. It also marks the stretch when the months are harder on both of you at once, when it's kinder to expect less, give more room and save the big talks for later. For romantic ties, a good stretch carries an extra note when one of its months combines with a partner palace, a sign that things between you tend to move.

The free check shows you the shape of the pair. The full BaZi compatibility report gives you the reading. Geumeum reads both charts together in the voice she uses for everything: plain, warm, and not above teasing you a little when the chart catches you out. It costs 100 credits, paid once, and it isn't a subscription.

The report stays in your history, and you can keep asking Geumeum about it: a particular month, an argument you keep having, what she meant by something. Each follow-up message costs 5 credits. When you're signed in and buy the report, both charts are saved to your account's My charts so they're there next time, and you can delete them anytime. The report comes in six parts: