Blood type personality · For fun
Blood type compatibility: the ten pairings at a glance
Select the square where both blood types meet to read that pairing.
Blood type compatibility chart
Swipe the table sideways to see every type, AB included.
"Type A and Type B just don’t get along" is one of the most repeated lines in Japanese and Korean blood-type talk. Pair the four types with each other, same-type pairs included, and you get ten combinations, each with an image that has been passed around for decades.
Pick a pairing in the chart to see how lore usually pictures those two people, along with a practical tip that works whatever anyone’s blood type. There are no scores or rankings here, because no pairing is fixed as good or bad.
How each pairing is usually pictured
Type A × Type AQuietly considerate
Two Type A people are pictured as comfortable from the start, since both care about punctuality and good manners to the same degree. Each notices what might bother the other and takes care to avoid it, so big fights are said to be rare. The flip side is that neither likes to voice a grievance, and lore warns that a calm surface can hide two people quietly storing up small hurts.
Tip for getting along
Set aside a moment every month or so to ask, "Is anything on your mind lately?" When there is already a time and place for it, small grievances get aired before they pile up.
Type A × Type BThe planner meets the improviser
This is the most famous "bad match" in blood-type compatibility. Type A wants to plan ahead and keep things in order, Type B moves wherever the moment leads, and the difference in pace is said to cause friction. Yet the same lore adds that Type A learns the fun of stepping outside the plan from Type B, while Type B learns the satisfaction of finishing things from Type A.
Tip for getting along
When planning a trip or a day out, leave deliberate gaps in the schedule. Type A sets the frame and Type B fills the gaps, and both end the day happy.
Type A × Type OOne leads, one supports
Type A and Type O are named as a good match more often than any other pairing. The picture is of Type O setting the overall direction with ease while Type A takes care of the details, so the roles divide naturally. Type O’s easygoing nature is said to ease Type A’s worries, but if Type O pushes decisions through alone, Type A may hold back and quietly wear out.
Tip for getting along
Before an important decision, have Type O ask first: "What do you think?" Type A finds it much easier to say what they really feel when their view is invited.
Type A × Type ABPolite and composed
Both Type A and Type AB tend to talk things through calmly rather than show strong emotion, so lore casts them as a grown-up pair who respect each other. Type AB’s rational eye helps Type A sort out worries, and Type A’s attentiveness puts Type AB at ease. The risk is that Type A reads Type AB’s need for time alone as a sign that something is wrong between them.
Tip for getting along
Talk openly, early on, about how often you like to be in touch and how much time alone each of you needs. Once you know each other’s baseline, a slow reply stops being a worry.
Type B × Type BFree-spirited like old friends
Two Type B people are pictured as a friendship-style pair who respect each other’s hobbies and time. Suggest a sudden trip or an odd plan and the other says "Let’s go!", so life together is full of new things. The catch, lore says, is that both put off chores, so dull jobs like bills and housework have a way of piling up unnoticed.
Tip for getting along
Assign an owner to every boring but necessary job. Simply knowing who handles what cuts down sharply on arguments about whose turn it was.
Type B × Type OEasy, open rapport
Type B and Type O are often named as a good match. Type O’s easygoing generosity takes free-spirited Type B as they are, and Type B’s quirky ideas bring fresh fun to Type O. The one snag in the picture: when Type O has gone to real trouble and Type B responds offhandedly, Type O may feel hurt without letting it show.
Tip for getting along
If you are the Type B, say thank you out loud, even briefly. Type O is pictured as someone for whom a small word of thanks makes all the effort feel worthwhile.
Type B × Type ABKindred unusual tastes
Type B and Type AB are pictured as sharing tastes and ideas that others find unusual. Conversation rarely runs dry, and each finds the other’s quirks fun rather than strange. Lore adds that neither finds it easy to open up about deep feelings, so when a serious worry comes along, each may carry it alone until a distance grows between them.
Tip for getting along
Make a habit of a casual "How are you doing, really?" It signals that this is a relationship where hard news is as welcome as the fun stories.
Type O × Type OHigh energy, strong team
Two Type O people are pictured as a lively, dependable pair, both generous and warm-hearted. They pitch in for each other as if every problem were their own, and with a shared goal they are said to make the strongest of teams. Because both are used to taking the lead, though, neither backs down easily when they disagree, and a small argument can drag on.
Tip for getting along
Divide decisions by area. One of you chooses the holidays, the other chooses where to eat, and the tug-of-war over who is in charge eases.
Type O × Type ABDrive balanced by caution
Type O and Type AB are pictured as two different speeds that balance out. Type O, moving ahead without hesitation, draws Type AB into new experiences, while Type AB, stepping back to think, reins in Type O’s rushed decisions. The catch is that sociable Type O may find Type AB’s need for distance cold.
Tip for getting along
If you are the Type O, when Type AB wants time alone, send them off with "Go recharge" rather than feeling left out. They come back noticeably more relaxed.
Type AB × Type ABGuarding each other’s space
Two Type AB people are pictured as easy company, since each understands the other’s need for distance better than anyone. They talk well without crowding each other and respect each other’s unusual ideas. But neither tends to reach out first, so when busy periods overlap, contact can quietly lapse and the two drift apart.
Tip for getting along
Create one small shared ritual, such as a call on the same evening every week. A fixed date keeps you connected while each of you keeps your own space.
What matters more than a chart
Blood-type compatibility is a well-loved story, but there is no evidence that it predicts whether two people will get on. Real relationships depend far more on habits: whether you hear each other out, and how you say it when something hurts.
If your pairing is one that people often call a "bad match", that is no reason to give up on someone you like. The tips above work whatever anyone’s blood type, so use them lightly, as a way into getting to know each other.
What research says
Blood type personality is a long-loved piece of popular culture. But large surveys in several countries, including a 2014 study analyzing the answers of more than 10,000 people in Japan and the United States, have found no meaningful link between ABO blood type and personality. If you would like to look at your current tendencies through your own answers, try the tests below. That does not mean their results connect to your blood type.
Blood type compatibility: frequently asked questions
Which blood types are said to be the best match?
Type A with Type O, and Type B with Type O, are the pairings most often named. Lore pictures them dividing roles or accepting each other’s nature. This is folklore told for fun, though, and there is no evidence that any pairing is a better match than another.
Are Type A and Type B really incompatible?
There is no scientific evidence that they are. The idea comes from contrasting a planner image of Type A with a spontaneous image of Type B. Plenty of couples find their differences are exactly what they learn from.
Do people with the same blood type get along better?
Lore pictures same-type pairs as easy company who understand each other. It also says they share the same strengths and the same weak spots, so it cannot be said that they get along better. In the end, a relationship is built by how two people talk to each other.
Is there any science behind blood type compatibility?
No, there is no scientific basis for it. Large studies have not found a meaningful link between ABO blood type and personality, so compatibility built on that idea has no basis either. Enjoy it as a light game that gets a conversation going.
This page reads blood type personality lore as culture and entertainment. Each blood type is shared by a large part of the population, and blood type cannot settle anyone’s personality or relationships. Please do not tease or discriminate against anyone because of their blood type.
How to use this content
- This page is reference content for self-understanding and light interpretation, not a diagnostic or evaluative tool.
- It should not replace medical, legal, financial, or hiring decisions, and important choices need stronger evidence than a self-test.
- Use the result for reflection or entertainment only, and seek professional support first when distress or risk is involved.