Enter two birth dates to instantly discover your zodiac compatibility score, pair chemistry, strengths, challenges, and actionable love tips.
Your Birthday
Their Birthday
| ♈ | ♉ | ♊ | ♋ | ♌ | ♍ | ♎ | ♏ | ♐ | ♑ | ♒ | ♓ | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ♈Aries | 75 | 49 | 80 | 37 | 89 | 47 | 80 | 44 | 87 | 42 | 82 | 42 |
| ♉Taurus | 49 | 75 | 45 | 84 | 43 | 85 | 46 | 78 | 48 | 86 | 40 | 83 |
| ♊Gemini | 80 | 45 | 75 | 50 | 81 | 41 | 85 | 51 | 82 | 44 | 86 | 47 |
| ♋Cancer | 37 | 84 | 50 | 75 | 44 | 82 | 45 | 88 | 42 | 82 | 52 | 86 |
| ♌Leo | 89 | 43 | 81 | 44 | 75 | 48 | 82 | 38 | 88 | 49 | 76 | 43 |
| ♍Virgo | 47 | 85 | 41 | 82 | 48 | 75 | 44 | 83 | 44 | 84 | 45 | 84 |
| ♎Libra | 80 | 46 | 85 | 45 | 82 | 44 | 75 | 52 | 80 | 39 | 87 | 50 |
| ♏Scorpio | 44 | 78 | 51 | 88 | 38 | 83 | 52 | 75 | 43 | 84 | 46 | 87 |
| ♐Sagittarius | 87 | 48 | 82 | 42 | 88 | 44 | 80 | 43 | 75 | 47 | 81 | 39 |
| ♑Capricorn | 42 | 86 | 44 | 82 | 49 | 84 | 39 | 84 | 47 | 75 | 46 | 82 |
| ♒Aquarius | 82 | 40 | 86 | 52 | 76 | 45 | 87 | 46 | 81 | 46 | 75 | 51 |
| ♓Pisces | 42 | 83 | 47 | 86 | 43 | 84 | 50 | 87 | 39 | 82 | 51 | 75 |
Click any score to read the full compatibility analysis
Zodiac compatibility is based on the elemental and modal relationships between signs. Signs sharing the same element (Fire, Earth, Air, Water) tend to understand each other intuitively, while complementary elements create dynamic attraction.
This calculator uses Sun sign compatibility — the most accessible form of astrological matching. For a deeper analysis considering Moon signs, Venus placements, and full synastry aspects, create your free birth chart.
The calculator above uses Sun sign compatibility — the most accessible and widely known form of astrological matching. It compares your core identities based on elemental harmony, modality interaction, and zodiacal polarity. This is a great starting point, but it captures only one layer of the full picture.
A complete synastry analysis goes far deeper, comparing how each planet in your chart interacts with every planet in your partner's chart. The most important synastry factors for romantic relationships are:
Moon — Moon — Emotional compatibility
Do your deepest needs align? Can you comfort each other instinctively?
Venus — Mars — Attraction & desire
Is there magnetic physical chemistry? Do your love styles complement?
Mercury — Mercury — Communication style
Can you talk, argue, and resolve without losing each other?
Saturn contacts — Long-term commitment
Is there staying power? Do you feel responsible toward each other?
Don't know your Moon or Venus sign? Start with your birth chart to discover all your placements, then try a full synastry comparison.
Sun sign compatibility is a great starting point, but astrologers know that the real chemistry between two people lives in their Venus and Mars placements. These two planets govern the most intimate dimensions of love and attraction.
Venus represents your love language — how you give and receive affection, what you find beautiful, and what you value in a partner. Venus in Taurus craves physical touch and sensual comfort, while Venus in Aquarius values intellectual freedom and unconventional bonds. When two people's Venus signs are compatible, they naturally appreciate and adore each other in ways that feel effortless.
Mars represents desire, passion, and how you pursue what you want. Mars in Scorpio is intensely magnetic and all-or-nothing, while Mars in Libra approaches desire through charm and partnership. Mars compatibility determines physical chemistry, how you handle conflict, and whether the spark sustains over time.
The most potent romantic connections often feature harmonious Venus-Mars interaspects — for instance, one person's Venus conjunct or trine the other's Mars. To discover your Venus and Mars signs and see how they interact with a partner's chart, try a full synastry analysis.
Professional astrologers evaluate relationships across five key dimensions. Understanding each one helps you see where your connection thrives and where it needs conscious attention.
Emotional
How well you understand each other's feelings, moods, and need for comfort. Governed primarily by Moon-Moon and Moon-Venus contacts.
Physical
Sexual chemistry, physical attraction, and how your bodies communicate. Driven by Mars-Venus interaspects and Sun-Mars contacts.
Intellectual
Mental stimulation, conversation quality, and how you process ideas together. Mercury aspects and Jupiter contacts shape this dimension.
Trust
Loyalty, reliability, and emotional safety. Saturn aspects create commitment; Moon-Saturn contacts build or test trust.
Growth
How much you evolve together. Jupiter-North Node contacts and Pluto aspects determine transformative potential.
Our full compatibility check scores all five dimensions using real planetary positions from your birth charts, not just Sun signs.
Elemental compatibility is one of the oldest and most reliable frameworks in relationship astrology. Each zodiac sign belongs to one of four elements, and these elements interact in predictable ways that shape romantic dynamics.
Fire signs (Aries, Leo, Sagittarius) and Air signs (Gemini, Libra, Aquarius) fuel each other. Air feeds fire with ideas and social energy, while fire gives air passion and direction. These couples are often the life of the party — adventurous, communicative, and always moving forward.
Earth signs (Taurus, Virgo, Capricorn) and Water signs (Cancer, Scorpio, Pisces) create a deeply nurturing bond. Water nourishes earth with emotional depth and intuition, while earth gives water stability and practical grounding. These couples build lasting foundations together.
Same Element
Two signs of the same element understand each other instinctively. Two Fire signs share passion, two Earth signs share values, two Air signs share ideas, two Water signs share emotional depth. The risk is too much similarity — no friction to spark growth.
Challenging Combos
Fire-Water and Earth-Air pairings require more work but can be deeply transformative. Fire can evaporate water's sensitivity; water can dampen fire's enthusiasm. Earth may find air flighty; air may find earth rigid. Awareness is the key to making these work.
Remember that your full chart contains all four elements in varying proportions. Even if your Sun signs are elementally mismatched, harmonious Moon, Venus, or Mars signs can bridge the gap.
Based on elemental harmony, modal interaction, and opposition magnetism, these are the zodiac pairings that score highest and lowest. Remember: a high score means natural ease, while a low score means growth through challenge — not failure.
Highest Compatibility
In astrology, each sign has a polar opposite — a sign exactly 180° across the zodiac wheel. These six opposition pairs share the same fundamental axis of energy, expressed in complementary ways:
♈ Aries — ♎ Libra
Self vs. Partnership
♉ Taurus — ♏ Scorpio
Security vs. Transformation
♊ Gemini — ♐ Sagittarius
Local vs. Global Knowledge
♋ Cancer — ♑ Capricorn
Home vs. Career
♌ Leo — ♒ Aquarius
Individual vs. Collective
♍ Virgo — ♓ Pisces
Analysis vs. Intuition
This is also why your Descendant (the sign opposite your Rising) describes what you seek in partners. Understanding the opposition axis reveals the deepest pattern behind who you attract — and why.
Even the most "incompatible" zodiac combinations can build lasting, fulfilling relationships. The difference between couples who thrive and those who don't isn't their sign compatibility — it's their willingness to understand and adapt. Here are evidence-based strategies mapped to astrological dynamics:
Learn each other's element
Fire signs need admiration and freedom. Earth signs need reliability and touch. Air signs need conversation and space. Water signs need emotional safety and depth. Speak their element's language, not yours.
Respect the modality difference
Cardinal signs initiate — let them lead sometimes. Fixed signs commit — don't force sudden changes. Mutable signs adapt — don't mistake flexibility for indifference.
Use tension as fuel
Square aspects (90°) create friction, but friction creates heat. Use disagreements as growth catalysts: 'What is this conflict teaching us?' instead of 'Who's right?'
Find the complementary gifts
Every 'incompatible' trait is a gift in disguise. Your partner's stubbornness is loyalty. Their detachment is independence. Their intensity is depth. Reframe the challenge as a strength you lack.
For personalized relationship advice based on both your charts, consult our Oracle — our AI astrologer can analyze your specific dynamics and offer tailored guidance.
Zodiac compatibility isn't only about love. The same elemental and modal dynamics that shape romantic chemistry apply to friendships, family bonds, business partnerships, and team dynamics. The difference is which planets dominate each context:
Friendship Compatibility
Sun + Moon + Mercury
How you have fun, process feelings, and communicate day-to-day. Fire-Air friendships are high-energy; Earth-Water friendships are deeply loyal.
Work Compatibility
Saturn + Mercury + Mars
How you collaborate under pressure. Cardinal signs lead projects, Fixed signs maintain systems, Mutable signs handle pivots.
Family Compatibility
Moon + Saturn + 4th House
How you create safety and manage obligation. Cancer, Taurus, and Capricorn energies anchor family bonds across all signs.
Creative Compatibility
Venus + Neptune + 5th House
How you inspire each other artistically. Pisces-Leo and Libra-Sagittarius often form the most creatively productive pairings.
Each of our 78 compatibility pair pages includes dedicated tabs for love, friendship, marriage, work, and sexual dynamics.
Sun sign compatibility provides a general overview of relationship dynamics based on elemental harmony, modality interaction, and zodiacal polarity. It captures about 15-20% of the full astrological picture. For significantly higher accuracy, a full [synastry](/synastry) analysis comparing both partners' Moon, Venus, Mars, and other planetary placements is recommended.
Signs of the same element tend to be naturally compatible: Fire signs (Aries, Leo, Sagittarius) share passion and energy, Earth signs (Taurus, Virgo, Capricorn) share stability and values, Air signs (Gemini, Libra, Aquarius) share intellectual curiosity, and Water signs (Cancer, Scorpio, Pisces) share emotional depth. Additionally, Fire-Air and Earth-Water are complementary pairs that tend to fuel each other.
Absolutely. Sun sign compatibility is just one layer. Many successful couples have 'incompatible' Sun signs but strong connections through their Moon signs (emotional bonding), Venus signs (love language), or Mars signs (physical chemistry). Challenging Sun sign dynamics can also create growth and passion that easier pairings lack. Use our [birth chart calculator](/birth-chart-calculator) to discover your full chart.
Synastry is the comparison of two complete birth charts to analyze relationship compatibility across multiple dimensions. It examines how one person's planets interact with the other's through aspects (conjunctions, trines, squares, oppositions). Professional synastry considers at least Moon-Moon (emotional), Venus-Mars (attraction), Mercury-Mercury (communication), and Saturn contacts (commitment). Try our full [synastry analysis](/synastry) for deeper insights.
Your natal chart is fixed at birth, but transiting planets continuously activate different parts of both partners' charts. Saturn transits can test commitment, Jupiter transits can expand romance, and Venus returns bring annual relationship renewal. This is why some years feel easier than others in the same relationship. Check [today's transits](/moon-today) for current relationship influences.
No signs are truly 'forbidden' from dating. However, square aspects (signs 90° apart, like Aries-Cancer or Taurus-Leo) create friction that requires conscious effort. Opposition signs (180° apart, like Aries-Libra) have strong magnetic attraction but face 'opposite personality' challenges. Interestingly, some of the most passionate and growth-oriented relationships come from these 'difficult' combinations.
For daily emotional harmony and long-term happiness, Moon sign compatibility is arguably more important than Sun sign. Your Moon sign governs emotional needs, instinctive reactions, and how you nurture. Two people with compatible Moon signs tend to understand each other's emotional language intuitively. Discover your Moon sign with our [Moon sign calculator](/moon-sign-calculator) for a more complete picture.
Venus governs how you give and receive love, what you find attractive, and your relationship values. Venus compatibility determines whether your love languages naturally align. For example, Venus in Taurus craves physical affection and stability, while Venus in Aquarius values intellectual freedom and unconventional bonds. The most magnetic couples often have Venus-Mars interaspects — one person's Venus harmonizing with the other's Mars.
Your [Descendant](/glossary/descendant) is the zodiac sign on the cusp of your 7th house (partnerships), directly opposite your [Rising sign](/rising-sign-calculator). It describes the qualities you unconsciously seek in partners. If your Descendant is in Scorpio, you're drawn to intense, emotionally deep partners even if your Sun sign seems to prefer lighter energy. Understanding your Descendant explains why you keep attracting certain types.
Opposite signs (Aries-Libra, Taurus-Scorpio, Gemini-Sagittarius, Cancer-Capricorn, Leo-Aquarius, Virgo-Pisces) share the same axis of energy expressed in complementary ways. Each partner has exactly what the other lacks, creating powerful magnetic attraction. The challenge is that these differences can also be a source of frustration. The key is viewing your partner's opposite qualities as gifts rather than flaws.
While designed primarily for romantic compatibility, the elemental and modal dynamics between zodiac signs apply to all relationships — friendships, family bonds, and work partnerships. Fire-Air combinations create energizing friendships, Earth-Water combinations build loyal alliances, and same-element pairings create instant understanding. Visit any [compatibility pair page](/compatibility) and switch between love, friendship, marriage, work, and sexual tabs.
Our score combines three astrological factors: (1) Elemental harmony — how well your two elements interact (same element scores highest, complementary elements score well, challenging elements score lower), (2) Modality interaction — how Cardinal, Fixed, and Mutable energies combine (complementary modalities get a bonus, same modality can create friction), (3) Opposition magnetism — signs exactly opposite in the zodiac receive a magnetic attraction bonus. The resulting score ranges from 20% to 95%.
Sun sign matching is a start. Get your full natal chart and compare Moon, Venus, and Mars placements with a partner.
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