Zodiac compatibility
Zodiac Compatibility Chart
A zodiac compatibility chart shows how any two Sun signs stand in relation to each other: the same element, a friendly element, a square, or an opposite. This one holds all 78 pairs. Tap any square in the grid to read what the tradition says about the two of you, then compare your two full birth charts for free.
No percentages and no scores here. Two people are always more than two Sun signs.
Find one sign down the side and the other along the top. Tap the square where they meet.
- Trine
- Sextile
- Opposite
- Square
- Same sign
- Neighbours
- Quincunx
Your two real charts
A Sun sign is one planet out of ten.
The free synastry calculator reads both birth charts together: Sun, Moon, Venus, Mars and the rest. It shows where the two of you flow and where the connection asks for care, in desire, home, work and abundance.
Compare our birth chartsHow to read the zodiac compatibility chart
Each square shows the angle between two signs on the zodiac wheel. Astrologers have read these angles the same way since Ptolemy wrote them down in the second century. There are seven possible relationships, and every pair of signs belongs to exactly one of them.
Trine
Four signs apart, in the same element. The tradition calls this the easiest contact of all, two people who want the same kind of life. The only risk is that ease goes unexamined.
Sextile
Two signs apart, in elements that feed each other: fire with air, earth with water. A friendly contact, easy to begin, and worth the small effort it asks.
Opposite
Six signs apart, facing each other across the wheel. Opposite signs share a mode and sit in elements that feed each other, so each one holds what the other is missing. Pull and mirror in equal measure.
Square
Three signs apart, in the same mode and in elements that do not mix easily. The tradition reads friction here, and friction is also heat. These pairs seldom bore each other.
Same sign
Two people of the same sign. You recognise each other at once, the gifts and the habits both. What neither of you has, nobody in the room supplies.
Neighbours
Signs side by side share neither element nor mode. The old astrologers said they cannot see each other. In practice, each one carries what the other has not learned yet.
Quincunx
Five signs apart, with nothing in common by element or mode. The tradition reads a life of small adjustments. It asks for curiosity more than agreement.
The four elements and the three modes
Two things decide how a pair is read. The element is what a sign is made of: fire, earth, air or water. The mode is how it moves: cardinal signs begin things, fixed signs hold them, mutable signs change them. Signs that share an element form a trine. Signs that share a mode form a square or an opposition.
| Sign | Element | Mode |
|---|---|---|
| Aries | Fire | Cardinal |
| Taurus | Earth | Fixed |
| Gemini | Air | Mutable |
| Cancer | Water | Cardinal |
| Leo | Fire | Fixed |
| Virgo | Earth | Mutable |
| Libra | Air | Cardinal |
| Scorpio | Water | Fixed |
| Sagittarius | Fire | Mutable |
| Capricorn | Earth | Cardinal |
| Aquarius | Air | Fixed |
| Pisces | Water | Mutable |
What a Sun sign chart cannot tell you
We would be poor company if we did not say this plainly. Sun signs alone have never been shown to predict who stays together. In 2007 the sociologist David Voas checked the birth dates of ten million married couples in England and Wales, and found no pairing of signs more common, or less common, than chance would give.
So we read this chart the way we read all astrology at our table in Bali: as a language for asking better questions. If the grid says square, the useful question is where the two of you make heat, and whether you are using it. If it says trine, the question is what you have stopped noticing.
Your Sun sign is also only one placement. The Moon speaks for what feels like home, Venus for what you love, Mars for what you want. Two people with a difficult Sun pairing often have a Moon and Venus that sit together beautifully. The synastry chart calculator reads all of it at once, and our letter on Venus square Mars in synastry shows how one single contact can shape a marriage.
All 78 zodiac sign pairs
Each pair appears once, under the sign that comes first in the zodiac. As we write a full letter on a pair, its name here becomes a link.
The 78 pairs load here. If they do not appear, refresh the page.
Your two real charts
A Sun sign is one planet out of ten.
The free synastry calculator reads both birth charts together: Sun, Moon, Venus, Mars and the rest. It shows where the two of you flow and where the connection asks for care, in desire, home, work and abundance.
Compare our birth chartsCommon questions about zodiac compatibility
Which zodiac signs are most compatible?
By tradition, signs of the same element are the most compatible: fire with fire (Aries, Leo, Sagittarius), earth with earth (Taurus, Virgo, Capricorn), air with air (Gemini, Libra, Aquarius) and water with water (Cancer, Scorpio, Pisces). These pairs form a trine. No study has shown that they last longer than any other pair.
Which zodiac signs are least compatible?
The tradition names squares, signs three apart such as Aries and Cancer, and signs with nothing in common, such as Leo and Capricorn, as the pairs that ask the most work. Asking more work is different from failing. Many couples build well on exactly this kind of difference.
Are opposite signs compatible?
Yes, in the traditional reading opposite signs attract. They share a mode and sit in elements that feed each other, such as Taurus and Scorpio or Leo and Aquarius. Each one holds what the other lacks, which is why the pull is strong and the arguments are familiar.
Is zodiac compatibility accurate?
Sun sign compatibility has not held up when tested. A 2007 study of ten million marriages in England and Wales found no sign pairing more common than chance. We use the chart as a way to ask better questions of a relationship, never as a verdict on it.
How do I check compatibility with a full birth chart?
Enter both birth dates in a synastry calculator. Synastry compares two whole birth charts, including the Moon, Venus and Mars, and shows the contacts between them. Ours is free, and birth time and city are optional.
With love from Bali,
Myrah