Which signs are most compatible with each other?

Same-element pairs (trines) are the most fluid: Aries-Leo-Sagittarius (fire), Taurus-Virgo-Capricorn (earth), Gemini-Libra-Aquarius (air), Cancer-Scorpio-Pisces (water). Sextiles (fire-air, earth-water) follow closely. But a full synastry can make an 'incompatible' sign couple excellent.

Is Sun-sign compatibility reliable?

It is a first indicator, not a verdict: the Sun sign is only one position among about forty in the chart. Moon, Venus, Mars and the Ascendant weigh as much if not more in couple life. Use our pages as an entrance door, synastry as the serious analysis.

Can two 'incompatible' signs form a happy couple?

Absolutely. A square between Suns (e.g. Aries-Cancer) creates friction, but Moons in trine, a Venus conjunct Mars or connected lunar nodes can make it one of the most structuring relationships there is. That is the whole point of going beyond the Sun sign.

Love & relationships

Zodiac Sign Compatibility

Which signs get along, and why? Our pair-by-pair analyses go beyond clichés: element dynamics, real strengths, friction points, sexuality, friendship and work — with, for each duo, the real questions to ask the synastry.

A note of astrological honesty: the Sun sign is only a first marker. Two people cannot be reduced to two signs — full compatibility is read between two complete birth charts. Our pages give you the marker AND the method to go further.

Analysed compatibilities

How to read sign compatibility

The elements give the first grid: fire and air fan each other, earth and water nourish each other, while fire-water or air-earth couples require more adjustments. Aspects between signs refine it: trine (same element) = flow, sextile = easy complicity, square = stimulating friction, opposition = attraction of opposites. Only then come the real questions: compatible Moons? Venus and Mars in dialogue? A Saturn that commits or freezes? That is the work of synastry.

To go deeper: synastry

Real compatibility is calculated between two complete charts: overlay of planets, cross-aspects, activated houses. Our synastry course gives you the full method.

The synastry course →

Frequently asked questions

Which signs are most compatible with each other?: Same-element pairs (trines) are the most fluid: Aries-Leo-Sagittarius (fire), Taurus-Virgo-Capricorn (earth), Gemini-Libra-Aquarius (air), Cancer-Scorpio-Pisces (water). Sextiles (fire-air, earth-water) follow closely. But a full synastry can make an 'incompatible' sign couple excellent.
Is Sun-sign compatibility reliable?: It is a first indicator, not a verdict: the Sun sign is only one position among about forty in the chart. Moon, Venus, Mars and the Ascendant weigh as much if not more in couple life. Use our pages as an entrance door, synastry as the serious analysis.
Can two 'incompatible' signs form a happy couple?: Absolutely. A square between Suns (e.g. Aries-Cancer) creates friction, but Moons in trine, a Venus conjunct Mars or connected lunar nodes can make it one of the most structuring relationships there is. That is the whole point of going beyond the Sun sign.