Zodiac Compatibility Calculator: Check Your Korean Zodiac Match by Birthday

When you picture a good match, it probably looks something like this: two lions sprawled on a wooden deck, one leaning right behind the other, both completely at ease. Lions aren't one of the 12 zodiac animals, but they show the feeling you hope a match will bring.

Want to know if your zodiac animals get along? Put both birthdays into our free zodiac compatibility calculator and you'll see your two animals, what kind of pair they make, and a full love match score in under a minute. One thing online charts skip: in K-SaJu (Korean astrology), your year animals are the smallest piece of a match. Even a pair labeled as a clash is a rhythm two people can learn, not a reason to walk away from someone you like.

Maybe a friend dropped a compatibility chart into your group chat and your pair landed in the scary column. If you've ever winced at a Gemini and Virgo matchup in Western astrology, it's a similar feeling, until you look deeper.

First, find both of your animals

Your zodiac animal comes from your birth year, with one twist. In K-SaJu the year turns at the start of spring, around February 4, not on January 1. So if either of you was born in January or the first days of February, your animal may belong to the year before.

Check yours in seconds with the free zodiac date checker, or scan the zodiac animal by birth year chart for every year from 1940 to 2027.

Korean zodiac compatibility chart

Picture the 12 animals sitting around a clock face, Rat at the top. Natural pairs are fixed partners: Rat with Ox, Tiger with Pig, and so on. Same team animals stand four steps apart and form groups of three, like Tiger, Horse and Dog. Opposite side means straight across the clock. Quiet tension sits one step away from straight across. Find your animal in the first column to read your row.

Two more pair types don't fit neatly in columns. Rat and Rabbit, Ox and Dog, Tiger and Snake, and Sheep and Dog are "keep you on your toes" pairs. Two Dragons, two Horses, two Roosters or two Pigs count the same way. Every other match of the same animal is simply a same-animal pair. Snake and Monkey could go in two places, and the natural pair wins.

What each pair type means for you two

Read each label as a description of your rhythm together.

• Natural pair: You click fast and fill each other's gaps without trying. Try this: say out loud what the other person does well, so the ease never gets taken for granted.
• Same team: You want similar things and tend to move in the same direction. Try this: plan one goal together, like a trip or a savings target.
• Same animal: Like two animals sharing one home every day, you pick up each other's habits quickly, the good ones and the stubborn ones. Try this: notice when you both dig in on the same point, and let one person go first.
• Opposite side: Your daily rhythms differ, which keeps things lively. Try this: talk early about the big stuff, like friends, family and weekends, before small differences pile up.
• Keep you on your toes: Little frictions show up, and each one teaches patience. Try this: when something bugs you, name it while it's still small.
• Quiet tension: Small hurts can add up without anyone meaning them. Try this: thank each other for ordinary things. In this pair, a kind word carries extra weight.
• Easygoing: Neither animal pulls or pushes much. Try this: look at the rest of your charts, because here the day you were born says far more than the year.

Harin's note

Around midnight a college friend posted one of those zodiac compatibility charts in our group chat and wrote "find your worst match lol". Everyone started posting theirs. I've been called a Rooster my whole life because I was born in January 1993, so I scrolled to Rooster and saw Rabbit in the clash column. My mom is a Rabbit. I sent a screenshot to her with "Mom, we're a clash apparently."

Then I remembered what I'd learned this year. In K-SaJu the year turns around February 4, so in my chart I'm a Monkey (Sin, 申), not a Rooster (Yu, 酉). I checked again, and the Rabbit was still in my row, this time under quiet tension. The label moved, but the animal followed me. My mom texted back "so what do we do?" and I said "say thanks more, I guess". She sent three heart emojis.

What stuck with me was how little the chart knew about us. We talk on the phone every Sunday, and that never showed up in any column.

Why your animals are only a small part

Our zodiac compatibility calculator reads both of your full birthdays, not just the years. Out of 100 points, here's where they come from:

• What you bring each other (30 points): whether the energy one chart is missing shows up in the other.
• The animals of your birth days (25 points): the day animal sits in the partner spot of each chart, so this is the closest look at everyday life together.
• How your birthday natures meet (20 points): your nature names, like Oak, Sun or Rain, and how they lean on each other.
• The partner sign in each chart (15 points): how ready each chart is for a close bond, and whether the other person lights it up.
• Your year animals (10 points): the chart above.

Two lions look alike, but how well they rest together comes from living side by side, not from the sign on the wall. Your birthdays work the same way. A quiet tension pair can still land a strong score when the deeper parts line up, and a natural pair can land in the middle when they don't.

Scores run from 60 to 97 in four tiers, from "A match you build slowly" up to "You two really pull each other in". Each tier shows where you two sync up and where you might hit a speed bump.

What you'll see in the calculator

You enter a birth date for each of you, plus a birth time if you know it. The time is optional, since the animals and most of the score come from the date. At the top of the result you'll see both of your year animals side by side with your pair type. Below that come your score, your attraction, your deeper bond and what you bring each other, and a picture you can save and share.

We don't keep either birthday on our servers. The result stays on your screen until you close the page.

If your animals landed in the clash column

Take a breath. A clash pair in K-SaJu describes two different tempos, one maybe faster and one slower, one social and one private. That mix can be a gift, because each person gets to see the world a new way.

No chart sees the everyday stuff, like listening, keeping small promises and showing up for each other. That counts far more than any animal, and it only works when both of you want to keep going. If someone has told you they need space, no pair type changes that, and the kind thing is to respect it.

Quick answers

Is the Korean zodiac different from the zodiac charts I see online? The 12 animals are the same. K-SaJu starts the year at the start of spring, around February 4, while many charts online switch at Lunar New Year, so only January and February birthdays can differ.

Is a low score a sign we should stop seeing each other? No. It means your charts fit together slowly, so you'll learn more by talking than by guessing. A slow start can still grow into a close bond.

Harin is a fictional character we use to tell these stories. The readings come from Rocky Saju's calculations.