Zodiac Compatibility Calculator
Pick any two zodiac signs and see compatibility across five axes, then read the full pair guide for deeper context.
A zodiac compatibility calculator scores two sun signs across love, friendship, sex, work, and longevity using the element and modality of each sign. Fire meets fire brings passion. Earth meets water grows slow roots. Cardinal signs initiate and sometimes clash over leadership. The scoring blends classic astrological pairings with element and modality logic, then the full pair page offers context. No score replaces the insight of a complete synastry reading, but it is a good place to begin.
Compatibility in astrology is rarely a single number. Two people meet through twelve sign energies, five visible planets, and the angles those planets form to each other. Still, a sun sign comparison is where most seekers start, and it is often the right place to start. The sun tells us what a person leans toward, what warms them, what they most want to be seen for.
Use the selector below to pick any two signs. The scorecard shows five axes, love, friendship, sex, work, and longevity, on a scale of one to five. Classic pairings like Cancer with Scorpio carry the scores most astrologers would give them in a reading. Less iconic pairings are scored by element and modality logic, which is explained below.
Treat the result as an opening, not an ending. Then click through to the full pair guide for the story beneath the numbers.
How the scoring works
Every pairing starts at a neutral three out of five. Same-element pairs earn a boost because they speak the same native language. Fire with fire understands urgency. Earth with earth understands patience. Complementary pairs, fire with air or earth with water, earn a smaller boost. Air feeds fire, giving it oxygen to grow. Water softens earth, allowing seeds to root.
When two signs sit three positions apart in the zodiac, they form a square, an angular tension of ninety degrees. When they sit directly across, six positions apart, they form an opposition. Both angles tend to produce friction in daily life, so the score drops by a point. Signs that share a modality, two cardinals or two fixeds, often push against each other over control, and that adds a small penalty.
Five classic pairings carry hand-tuned scores that honour what practitioners actually teach. Cancer and Scorpio, the water twins. Aries and Leo, the fire spark. Taurus and Virgo, the earth builders. Gemini and Aquarius, the air minds. Pisces and Cancer, the dream current. These are the pairings where tradition is strong enough to override the formula.
What the five axes mean
Love measures romantic resonance. It asks how the two signs feel about affection, attention, and the emotional register of partnership. Water signs lift this axis because they open the door to feeling. Complementary elements add warmth because the pair brings each other something new.
Friendship measures the ease of companionship outside romance. Air signs lift this axis because they love conversation and shared ideas. Same-element pairs also score well because they agree on what a good day looks like. Friendship often outlasts chemistry, and many couples say it is the axis that carries them through the hard seasons.
Sex measures physical attraction and the quality of intimacy. Fire signs raise this axis because they bring heat and spontaneity. Oppositions raise it too, since that magnetic across-the- wheel pull is a real feature of the zodiac. Low sex scores often show up where the element mix is too similar or too calm to produce tension.
Work measures how well the pair collaborates on shared projects. Earth signs lift this axis because they value execution and results. Pairs with different modalities often do well here, since one person can initiate while the other finishes. Two cardinal signs can clash over who leads, and two fixed signs can stall on change.
Longevity measures staying power across years. Earth and water pairs score highest because they value steadiness and nourishment. Fire-fire pairs score a touch lower because the pace is hard to sustain over decades. Longevity does not mean inevitability. Every long partnership is built by the people inside it, sign or no sign.
Join the Mystic Community
Weekly insights on your stars, signs, and chart
Common questions
How does this zodiac compatibility calculator work?
The calculator compares two sun signs using their element and modality. Same-element pairs receive a boost. Complementary elements, fire with air and earth with water, receive a smaller lift. Signs that form a square or an opposition lose a point. Classic pairings like Cancer and Scorpio use hand-tuned scores drawn from traditional astrology so the results feel true to what practitioners actually teach.
Is sun sign compatibility enough to judge a relationship?
No. Sun sign compatibility is a useful starting frame, not a verdict. The moon sign shapes emotional needs. Venus shapes what feels loving. Mars shapes desire and pursuit. Two people with clashing sun signs often harmonise beautifully through moon, Venus, or ascendant connections. Use the calculator as a beginning, then read the full pair guide and, ideally, explore synastry with both complete charts.
What do the five axes mean?
Love describes romantic resonance and emotional chemistry. Friendship describes ease of companionship outside romance. Sex describes physical attraction and the feel of intimacy. Work describes collaboration style and how well the pair handles shared projects. Longevity describes staying power over years, how the pair weathers routine, conflict, and change together.
Can incompatible signs still have a healthy relationship?
Yes. Low scores signal tension, not doom. Every pairing contains friction, and friction often drives growth. Awareness matters more than the score. Couples who name their differences, honour each other's elements, and communicate through conflict routinely build loving partnerships across any sign combination.