The easiest couples often share an element, like Aries and Leo, Taurus and Capricorn, or Scorpio and Pisces. Square signs need more dialogue. Yet the Sun sign is only part of the story: rising sign, Moon, Venus and Mars matter too.
Wondering whether your relationship is built to last? This guide brings together all 78 possible pairings, a clear score, and the birth-chart factors that take compatibility further.
How compatibility between two signs is calculated
Compatibility begins with the distance between two signs in the zodiac. This creates an aspect; the score is then refined through elements and modes: cardinal, fixed or mutable.
Fire works naturally with air; earth works with water. Oppositions can create strong attraction, while squares invite both partners to learn compromise.
Distance
Aspect
Example
In love
Score
Cancer signs
Trine
Aries × Leo
Natural harmony
Sagittarius–Capricorn/Capricorn
Taurus signs
Sextile
Aries × Gemini
Stimulating bond
Scorpio/Capricorn
Virgo signs
Opposition
Aries × Libra
Opposites attract
Libra/Capricorn
0
Conjunction
Aries × Aries
Mirror effect
Libra/Capricorn
Aries sign
Semi-sextile
Aries × Taurus
Curiosity to nurture
Leo/Capricorn
Gemini signs
Square
Aries × Cancer
Tension and passion
Gemini–Cancer/Capricorn
Leo signs
Quincunx
Aries × Virgo
Constant adjustments
Cancer/Capricorn
A low score is not a verdict. It highlights where a couple needs more dialogue.
The 12-sign compatibility table
Cross the two signs to see the score out of 10. Every number opens the full pairing analysis.
The Sun sign is only one part of a ten-planet birth chart. Two people of the same sign can love very differently according to their Moon, rising sign, Venus and Mars. Synastry compares these points across two charts.
Sun
Identity and life force
Rising sign
How you enter relationships
Moon
Emotional needs
Venus
How you love and attract
Mars
Desire and conflict style
Seventh house
The partner you seek
Compatibility by element
Signs of the same element, or allied elements, usually understand each other more easily.
△
Fire
Passion and energy
Aries · Leo · Sagittarius
▽
Earth
Stability and loyalty
Taurus · Virgo · Capricorn
△
Air
Intellectual connection
Gemini · Libra · Aquarius
▽
Water
Emotional fusion
Cancer · Scorpio · Pisces
Frequently asked questions
Which sign is most compatible with mine?
Usually the other two signs of your element. Aries naturally connects with Leo and Sagittarius.
Which signs are least compatible?
Square signs create more tension, including Taurus–Aquarius, Leo–Scorpio and Aries–Cancer.
Can incompatible signs last?
Yes. A harmonious Moon or Venus can offset tension between Sun signs.
Does the rising sign matter?
Yes. It describes how you enter relationships and can support immediate attraction.
Can astrology predict relationship success?
No. It helps explain differences; partners build the relationship themselves.
About the author
Antoine Cazals is the founder of Zodiane. He leads its editorial method combining astronomical calculations, astrological traditions and accessible writing.
Sources and method
Claudius Ptolemy, Tetrabiblos, Book I: major aspects and triplicities.
Johannes Kepler, Harmonices Mundi (1619): minor aspects.
Zodiane method: sign aspect, elements and astrological modes.
Astrology is offered for reflection and entertainment. It does not replace professional advice.
